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Great and quick support. The maual was exactly what I was looking for and my problem
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Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
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you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
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Item as described, very well detailed manual with complete schematics. I've received the download information shortly after payment, very good support.
TX-DS898
A
Idling current adjustment Before Idling adjustment, turn the trimming resistors R6040 to R6046 to counter clockwise. Connect the DC voltmeter to sockets P6080 to P6086. After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading of voltmeter becomes 7.0 mV. (Front and center channels) Adjust the trimming resistors R6043, R6044, R6045 and R6046 so that the reading of voltmeter becomes 5.0 mV. (Surround and surround back channels) After adjustment, attach the top cover. Confirm the voltage of points above after about five minutes. Front and center channels When less than 9.0 mV, readjust the resistors above so that the voltage becomes 9.0 mV. When 9.0 mV to 11.0 mV, you are not necessary to adjust. When more than 11.0 mV, readjust the resistors above so that the voltage becomes 11.0 mV. Surround and surround back channels When less than 6.0 mV, readjust the resistors above so that the voltage becomes 6.0 mV. When 6.0 mV to 8.0 mV, you are not necessary to adjust. When more than 8.0 mV, readjust the resistors above so that the voltage becomes 8.0 mV. Note: No load and No signal
B
C
D
ADJUSTMENT AND CONFIRMATION PROCEDURES
1
2
L ch.
DI-
R ch.
DI-
C ch.
DI-
3
P6083
+ID -ID
R6040
P6080
R6041
P6081
R6042
P6082
R6043
P6084
+ID -ID
R6044
P6085
+ID -ID
R6045
P6086
+ID -ID
R6046
SL ch.
SR ch.
SBL ch.
SBR ch. NAAF-7250
4
Confirmation of protection circuit 1. Confirmation of operation of speaker relay Confirm that the speaker relays turn ON approximate. 5 seconds after the power switch is turned ON. Confirm that the speaker relays turn OFF immediately after the power switch is turned OFF. 2. Confirmation of DC detection circuit Press and hold down CD button, then press STANDBY/ON and DISPLAY buttons to set the unit to "TEST-1" mode. After "TEST-1" on the FL tube light on, press VIDEO 1 button to set the unit to "TEST-1-00". Apply DC 1.5 to 3V to MULTI CHANNEL INPUT terminal with no load. Confirm that the speaker relay turns OFF. Apply DC -1.5 to -3V to MULTI CHANNEL INPUT terminal with no load. Confirm that the speaker relay turns OFF. Caution: Don't apply DC voltage more than 1 sec..
5
DI+
DI+
DI+
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