Aiwa compact CD
stereo system circuit diagram – HE,U,C,E,K and Z models
Click on the schematics to magnify
Tuesday, May 29, 2018
Saturday, May 26, 2018
A 715G6297 PSU Philips LCD TV SMPS – Power Board schematic
Used ICs: PF6200, TK6A65D(FET), EL817M(X)-Opto-coupler,
PF7001S, AO4286
All
power supplies are a black box for Service. When defective, a new board must be
ordered and the defective one must be returned, unless the main fuse of the
board is broken. Always replace a defective fuse with one with the correct specifications!
This part is available in the regular market.
Consult the Philips Service web portal for the order codes of the boards.
Important
delta’s with the 3010/4010/5010//5110 platform are:
• New power architecture for LED backlight
• “Boost”-signal is now a PWM-signal + continuous variable.
The control signals are:
• Lamp “on/off”
• DIM (PWM)
In this manual, no detailed information is available because of design
protection issues.
The output voltages to the chassis are:
• +12V for main board and audio amplifier (standby and on-mode) (for
715G6197,715G6297,715G6550)
• +12V(on-mode) ,+8.5V(Standby-mode)for main board and audio amplifier (for
715G6934 715G6677 715G6973)
• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
The
diversity in power supply units is mainly determined by the diversity in
displays.
The
following displays can be distinguished:
• CCFL/EEFL backlight: power board is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power board
- side-view LED with scanning: PSLS power board
- direct-view LED without 2D-dimming: PSL power board
- direct-view LED with 2D-dimming: PSDL power board.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers with added Scanning
functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming
A 715G6297 PSU Philips LCD TV SMPS – Power Board schematic
A 715G6297 PSU Philips LCD TV SMPS – LED driver schematic
A 715G6297 PSU Philips LCD TV SMPS PWB
Thursday, May 17, 2018
Sanyo LCE 24R45FHD – LCD TV – how to enter the service mode, adjustments, firmware update
Sanyo LCE 24R45FHD - software update, white balance adjustment, service mode, unit adjustment, SMPS and audio output schematic, Universal remote control set-up codes and more...
Working
principle analysis
RF
signal from antenna is sent into TUNER301 to be processed by HF-amplified and
frequency mixing, then IF signal is outputted to SWF Z301 to be IF filtered to
get ideal IF characteristics, then the signal is sent to main chip N101(RTD2674S)-27#,28#
to be amplified by inline IF amplifier and synchronous demodulated to get CVBS.
Video and audio signal from AV and YPbPr are sent to main chip N101 directly; video and audio signal from VGA and HDMI1, HDMI2 are also sent to main chip N101 directly.
Main chip N101(RTD2674S) is a special large scale IC with full functions, such as HDMI interface process, video decoding, video switch selection, A/D and D/A transformation, interleaved/successive scans, mode transformation, OSD and low-voltage difference output process, etc.; furthermore, it also has functions of audio selection and process, MCU, etc.; external video signal is processed by main chip N101(RTD2674S), then 4 pairs of difference signals and one pair of clock signals are outputted to LCD to display; external audio signal processed by main chip N101(RTD2674S) is sent to sound amplifier N501（ TAS5711） to be amplified and then to speakers.
Video and audio signal from AV and YPbPr are sent to main chip N101 directly; video and audio signal from VGA and HDMI1, HDMI2 are also sent to main chip N101 directly.
Main chip N101(RTD2674S) is a special large scale IC with full functions, such as HDMI interface process, video decoding, video switch selection, A/D and D/A transformation, interleaved/successive scans, mode transformation, OSD and low-voltage difference output process, etc.; furthermore, it also has functions of audio selection and process, MCU, etc.; external video signal is processed by main chip N101(RTD2674S), then 4 pairs of difference signals and one pair of clock signals are outputted to LCD to display; external audio signal processed by main chip N101(RTD2674S) is sent to sound amplifier N501（ TAS5711） to be amplified and then to speakers.
Unit
adjustment
According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ , ‘9224KC7001J’ , "9224KC6801JL" or ‘9232KC7001JL’, connect main board, power board, key board and IR board correctly, switch on power supply, check if display is normal?
Instruction of factory menu
According to wiring diagram ‘9242KC4201JL’ , ‘9222KC4201JL’, ‘9219KC7201JL’ , ‘9224KC7001J’ , "9224KC6801JL" or ‘9232KC7001JL’, connect main board, power board, key board and IR board correctly, switch on power supply, check if display is normal?
Instruction of factory menu
a） First press key ‘Program source’, then press
number keys “2,5,8,0” in turn to enter initial factory menu;
b） Press keys “Up ” and “Dn ” to move cursor to each adjustment page of initial factory menu, then press “Right ” to enter into its adjustment menu;
c） Press keys “Up ” and “Dn ” to move cursor upwards or downwards within any adjustment page;
d） Press keys “Left ” and “Right ” to adjust any item when cursor is moved onto it;
e） Press key “Menu” to exit to initial menu from any adjustment page;
f） Press key “Exit” to exit from factory menu in any case;
g） Set item “Aging Mode” as “On” to enter into factory aging mode.
b） Press keys “Up ” and “Dn ” to move cursor to each adjustment page of initial factory menu, then press “Right ” to enter into its adjustment menu;
c） Press keys “Up ” and “Dn ” to move cursor upwards or downwards within any adjustment page;
d） Press keys “Left ” and “Right ” to adjust any item when cursor is moved onto it;
e） Press key “Menu” to exit to initial menu from any adjustment page;
f） Press key “Exit” to exit from factory menu in any case;
g） Set item “Aging Mode” as “On” to enter into factory aging mode.
White balance adjustment
Before adjustment
The unit should be working for above 30 minutes to be in stabler state; Use apparatus CA210 to adjust white balance;
For model of which dimension is bigger than 26”, only 9300K color temperature (that is “normal”) is needed adjustment, To guarantee BBY test requirements to be met when color temperature are 12000K and 6500K, make sure that chromaticity coordinates of bright scale are (X=285±5, Y=293±8) and chromaticity coordinates of dark scale are (X=285±8, Y=293±12);
For model of which dimension is 26” or smaller than 26”, only 8000K color temperature (that is “normal”) is needed adjustment, To guarantee test requirements to be met when color temperature are 9300K and 6500K, make sure that chromaticity coordinates of bright scale are X=295±5, Y=305±8) and chromaticity coordinates of dark scale are (X=295±8, Y=305±12);
Before adjustment
The unit should be working for above 30 minutes to be in stabler state; Use apparatus CA210 to adjust white balance;
For model of which dimension is bigger than 26”, only 9300K color temperature (that is “normal”) is needed adjustment, To guarantee BBY test requirements to be met when color temperature are 12000K and 6500K, make sure that chromaticity coordinates of bright scale are (X=285±5, Y=293±8) and chromaticity coordinates of dark scale are (X=285±8, Y=293±12);
For model of which dimension is 26” or smaller than 26”, only 8000K color temperature (that is “normal”) is needed adjustment, To guarantee test requirements to be met when color temperature are 9300K and 6500K, make sure that chromaticity coordinates of bright scale are X=295±5, Y=305±8) and chromaticity coordinates of dark scale are (X=295±8, Y=305±12);
White balance adjustment of HDMI channel
Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 921), enter into submenu “color temperature adjustment” of factory menu;
For model of which dimension is bigger than 26”, select “normal” color temperature (that is 9300K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as （ 285±8, 293±12） and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as （ 285±8, 293±12） ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until chromaticity coordinates of both scales are all （ 285, 293） ;
For model of which dimension is 26” and small than 26”, select “normal” color temperature (that is 8000K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as （ 295±8, 305±12） and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as （ 295±5, 305±8） ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until chromaticity coordinates of both scales are all （ 295, 305） ;
Set item “ALL COLOR” as “ON” after completing adjustment 4.2.3 White balance adjustment of YPbPr channel ADC calibration of SD mode: Input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
ADC calibration of HD mode: Input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 921), enter into submenu “color temperature adjustment” of factory menu;
For model of which dimension is bigger than 26”, select “normal” color temperature (that is 9300K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as （ 285±8, 293±12） and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as （ 285±8, 293±12） ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until chromaticity coordinates of both scales are all （ 285, 293） ;
For model of which dimension is 26” and small than 26”, select “normal” color temperature (that is 8000K), fix item “G Offset”, adjust items “R Offset, B Offset” to set chromaticity coordinates of the 3rd scale as （ 295±8, 305±12） and guarantee luminance within the range of 3 nit to 5 nit; fix item “G GAIN”, adjust items “R GAIN, B GAIN” to set chromaticity coordinates of the reverse 3rd scale as （ 295±5, 305±8） ; adjust items “R Offset, B Offset” and “R GAIN, B GAIN” repeatedly until chromaticity coordinates of both scales are all （ 295, 305） ;
Set item “ALL COLOR” as “ON” after completing adjustment 4.2.3 White balance adjustment of YPbPr channel ADC calibration of SD mode: Input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
ADC calibration of HD mode: Input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
White balance adjustment: Input 16-grey-scale signal with format of
1080i/60 Hz (VG848: Timing is 972， PAT is 921), check if white balance is normal,
if not, enter into submenu “color temperature adjustment” of factory menu, set
item “ALL COLOR” as “OFF”, please refer to step 4.2.2 to adjust white balance
for model of which dimension is 26” , bigger than 26” or smaller than 26”
respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
White balance adjustment of VGA channel
Auto-calibration: Input square signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is CROSS) to do calibration automatically in order to make window filled with picture;
ADC calibration: Input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
White balance adjustment: Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to above step.
to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
White balance adjustment of VGA channel
Auto-calibration: Input square signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is CROSS) to do calibration automatically in order to make window filled with picture;
ADC calibration: Input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically, please note whether picture and data are abnormal clearly or not (main abnormal data phenomena are that several data are very different from the other or about 1000 more than the other); it is failed to calibrate ADC if data are abnormal clearly, so it is necessary to do the calibration again;
White balance adjustment: Input 16-grey-scale signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to above step.
to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”.
White balance adjustment of AV channel
Input 16-grey-scale signal with format of PAL (VG848: Timing is 969， PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to step 4.2.2 to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”. 4.2.6 Auto-white balance adjustment
ADC pre-calibration
Enter into factory menu, set “Program source” as “YPbPr”, input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically; input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically,
Press key “Menu” to be back to upper menu, set “Program source” as VGA”, input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically,
Input 16-grey-scale signal with format of PAL (VG848: Timing is 969， PAT is 921), check if white balance is normal, if not, enter into submenu “color temperature adjustment” of factory menu, set item “ALL COLOR” as “OFF”, please refer to step 4.2.2 to adjust white balance for model of which dimension is 26” , bigger than 26” or smaller than 26” respectively;
Note: Item “ALL COLOR” must not be altered as “ON” again once set as “OFF”. 4.2.6 Auto-white balance adjustment
ADC pre-calibration
Enter into factory menu, set “Program source” as “YPbPr”, input color-bar signal with format of 480i/60 Hz (VG848: Timing is 968， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically; input color-bar signal with format of 1080i/60 Hz (VG848: Timing is 972， PAT is 918), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically,
Press key “Menu” to be back to upper menu, set “Program source” as VGA”, input monochrome signal with format of 800×600/60 Hz (VG848: Timing is 854， PAT is 948), enter into submenu “ADC adjustment” of factory menu and select item “AUTO COLOR”, system will begin calibration automatically,
White balance adjustment (models except LC-19KC72, LC-22KC72)
TV set should be working for above 30 minutes to be in stabler state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;
Open program file “White_Balance.exe”, load configure file “AdjustConfig.txt”, then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
White balance adjustment (models except LC-19KC72, LC-22KC72)
TV set should be working for above 30 minutes to be in stabler state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;
Note: Channel shared by AV/YPBPR must be adjusted respectively.
Open program file “White_Balance.exe”, if current working progress includes AV channel, enter into channel setting of administer window to make sure no YPBPR576i@60 but AV is chosen, or load configure file “AdjustConfigAV.txt”; if current working progress includes YPBPR channel, enter into channel setting of administer window to make sure no AV but YPBPR576i@60 is chosen, or load configure file “AdjustConfigYPBPR.txt.txt”; then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side; BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
TV set should be working for above 30 minutes to be in stabler state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;
Open program file “White_Balance.exe”, load configure file “AdjustConfig.txt”, then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side;
BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
White balance adjustment (models except LC-19KC72, LC-22KC72)
TV set should be working for above 30 minutes to be in stabler state before white balance adjustment; connect CA210 to USB port of PC with data line; connect VG848 and TV to COM port of PC or virtual COM port respectively (default connection: VG848 to COM5,TV to COM1, the connection can be altered and saved in administrator window with password “xoceco” if necessary); output signal of VG848 must be sent to AV1, YPbPr, VGA and HDMI1 channels of TV;
Note: Channel shared by AV/YPBPR must be adjusted respectively.
Open program file “White_Balance.exe”, if current working progress includes AV channel, enter into channel setting of administer window to make sure no YPBPR576i@60 but AV is chosen, or load configure file “AdjustConfigAV.txt”; if current working progress includes YPBPR channel, enter into channel setting of administer window to make sure no AV but YPBPR576i@60 is chosen, or load configure file “AdjustConfigYPBPR.txt.txt”; then connect CA210, VG848 and TV respectively according to the instruction on interface.
Note: set probe to “0-CAL” before connecting CA210, press “connect CA210”, set probe back to “MEAS” after prompt “CA-210 connection and calibration are normal !” appears on the left-down side; BBY channel is used by CA210 for BBY models, for other models, channels except BBY are used by CA210; please enter into administer window with password “xoceco” to alter and save apparatus setting if it is different;
At last, press “Begin auto-white-balance-adjustment”, auto-adjustment will be completed until prompt “Adjustment is successful” appears.
Performance
check
TV port
Connect RF port to central signal source, first enter into channel menu, then auto search programs, check if there is any omitted program ,output of speakers and picture are normal
AV/S-Video port
Input AV/S signal to corresponding terminal respectively, check if picture and sound are normal.
YPbPr/YCbCr port
Input YUV signal from signal general VG848 with YUV format listed as Table 8, check if picture and sound are normal.
Connect RF port to central signal source, first enter into channel menu, then auto search programs, check if there is any omitted program ,output of speakers and picture are normal
AV/S-Video port
Input AV/S signal to corresponding terminal respectively, check if picture and sound are normal.
YPbPr/YCbCr port
Input YUV signal from signal general VG848 with YUV format listed as Table 8, check if picture and sound are normal.
VGA port
Input VGA signal from signal general VG848 with VGA format listed as Table 9, check if picture and sound are normal, if not, enter into menu to do auto-calibration.
Input VGA signal from signal general VG848 with VGA format listed as Table 9, check if picture and sound are normal, if not, enter into menu to do auto-calibration.
HDMI port
Input HDMIsignal from signal general VG849 with VGA format listed as Table 8&9 , check if picture and sound are normal
USB port
Inset U disk, check if JPEG picture and MP3 music are displayed normally
AV OUT port
Check if picture and sound of AV OUT are normal
Check other functions
Check if time-on/off, sleeping time, picture/sound mode, OSD, still picture/mute and microcrystalline-magical-picture, etc., are normal.
Input HDMIsignal from signal general VG849 with VGA format listed as Table 8&9 , check if picture and sound are normal
USB port
Inset U disk, check if JPEG picture and MP3 music are displayed normally
AV OUT port
Check if picture and sound of AV OUT are normal
Check other functions
Check if time-on/off, sleeping time, picture/sound mode, OSD, still picture/mute and microcrystalline-magical-picture, etc., are normal.
User menu setting before leaving factory
Enter into factory menu, select item ‘Reset’, TV set will be preset automatically before leaving factory. Be sure to do the step after completing adjustments in factory.
Instruction for software burning in factory as Table 10
Enter into factory menu, select item ‘Reset’, TV set will be preset automatically before leaving factory. Be sure to do the step after completing adjustments in factory.
Instruction for software burning in factory as Table 10
SMPS schematic
Audio output schematic
Click on the pictures to magnify
Software
upgrade
Instruction of software upgrade for KC# model:
1. Save upgrade file “flash.img” into the root directory of a U disk;
2. Insert the U disk into USB port of TV set, press key “power” until TV set is in “standby” state, then power on TV set again;
3. Press key “program source” until menu “program source” display, then press keys “2”, “5”, “8”, “0” by turn to enter into factory menu.
Instruction of software upgrade for KC# model:
1. Save upgrade file “flash.img” into the root directory of a U disk;
2. Insert the U disk into USB port of TV set, press key “power” until TV set is in “standby” state, then power on TV set again;
3. Press key “program source” until menu “program source” display, then press keys “2”, “5”, “8”, “0” by turn to enter into factory menu.
4.
Press keys of remote control “▲”,”▼” to select item “ISP”, press key “enter” to
begin updating progress, a prompt “Updating, Pls, Waiting…” is displaying, wait
for a while until menu display (TV set is unable to accept other operation
now).
5.
TV set will auto-reset after completing update, according to step1 and step 2,
enter into factory menu again to confirm updating completion by checking the
time of update file.
Universal remote
control set-up code list for Sanyo brand TVs
0018 0020 0041 0049 0050 0065 0101
0102 0107 0131 0139 0152 0161 0166 0177 0181 0195 0198 0209 0215 0314 0320 0379
0391 0408 0421 0634 0660 0667
Wednesday, May 16, 2018
AttacK VRF1230 – AMLIFIER circuit diagram – adjustments
Preliminary Adjustments
Connect
the amplifier to the 127V mains with lamp in series;
Turn the ON / OFF switch and measure the DC
voltages at the source:
+ Vref (pin 6 of the PRC board CNC6): 4.8Vdc @
127Vac / 4Vdc @ 220Vac
+ 15Vdc: Pin 4 of the PRC board CNC6;
-15Vdc: Pin 1 of the PRE plate CNC6
+ B and -B (CNC1 and CNC6 of PWR board): +/-
88Vdc @ 127Vac / +/- 74Vdc @ 220Vac;
Enter
with 1KHz signal and check with the oscilloscope the signal at the output;
If
everything is OK, remove the lamp;
Redo
the voltage measurements, in 127Vac and also in 220Vac, as described in item
1.2;
Set
the trim trimpot to the anti-clockwise position, POT3 (THRESHOLD);
Set
Offset to POT7 (OFFSET) while keeping signal at input and volume all open. To
monitor with the multimeter to get 0Vdc on Tp6. Select the smallest DC voltage
range available on the multimeter used. After adjustment lock the trimpot with
stained glass;
LED Testing:
Set
the signal level to 0.8Vrms @ 1kHz. Check the operation of the signal LED and
the limiter LED;
Short Circuit Testing:
Set the signal level until the signal LED is
lit;
Measuring
the signal at the output, short-circuit the output of the amplifier. At this
moment the signal will be cut;
After the short test, test again, to see if
everything is OK;
Frequency Response Test:
Plot
the frequency response curve as described below:
NOTE:
Use attenuated cable at 20dB
Enter
Line Input with flat Equalization: "VRF1230-Flat" curve
Enter
Line Input with Open Equalization: Curve "VRF1230-Open"
Enter
MIC Input with closed Equalization: "VRF1230-Closed"
Burn-in test:
If
everything OK put in BURN-IN for 2 hours the maximum musical power on load of 4
ohms;
Final Tests:
After
BURN-IN, if no fault, check the limiter value (sinusoidal output voltage value
in rms, according to item 3) with the amplifier well heated, if changed,
readjust the POT LIMITER. After adjusted lock the trimpot with stained glass;
THD (Harmonic Distortion)
Sine input signal 0.6 Vrms / 1kHz / 4 Ohms;
With
Neutrik measure THD with 22Hz-22kHz enabled filter;
The value must be less than 0.500%.
S / N (Signal to Noise Ratio)
Sinusoidal input signal 0.6Vrms / 1kHz / 4
Ohms;
With Neutrik put in LEVEL and select LEVEL REL
(0dBref in SET REF) with 22Hz-22kHz filter enabled. After mute the neutrik;
The value must be greater than 80dB.
Phase
Check the phase between the input signal and
the output signal.
Monitor with an oscilloscope channel pin 2 of
the input connector;
Monitor with the other channel of the
oscilloscope the amplifier output signal;
Both
must be in phase.
Check List:
Make
sure all plates are securely fastened;
Check
that the block is securely fastened;
Check
if all the wiring connections between the boards are well made;
Check if silicone has been placed on all
capacitors and dissipators of the FNT board;
Check if silicone has been inserted into all
connectors (flat and flexible cables);
Check
if all trimpots (offset and limiter) are sealed with stained glass;
Check that the wiring is not touching any heat-sink;
Check that the wiring of the block is secured
with a well-formed plastic strap;
Check that the XLR's external connectors are
securely fastened;
Check the grounding of pin 1 of the XLR
connectors for the chassis;
Check the paint (external) of the appliance
for risk;
Saturday, May 12, 2018
Grundig 19-2010 T DVD GBI0019 – SMPS and inverter schematics – YVL193 and YTF194
Calling
up the Service Mode
Press button MENU (TV Menu).
Enter the code number 8500.
Press button MENU (TV Menu).
Enter the code number 8500.
Exit
the Service Mode
Press button MENU.
Press button MENU.
Software
Version Number
The software version number is shown on the lower part of the options menu and the service menu, e.g.:
ST6GMW.F8M.R64M.V00.T15
The software version number is shown on the lower part of the options menu and the service menu, e.g.:
ST6GMW.F8M.R64M.V00.T15
PWB Layout
Chassis
Board – Power Supply -
Chassis
Board – Amplifier -
Power
supply [SMPS] – YTF194 -
Inverter
YTF194 -
SMPS-YVL193 -
Inverter
– YVL193 -
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