jedyne do czego mogę mieć zastrzeżenie to jakość zdjęć zawartych w przesłanej instrukcji serwisowej ponieważ są fatalnej jakości, praktycznie nieczytelne. tak poza tym jestem zadowolony to jest to czego szukałem.
Instrukcja jest OK. Schematy czytelne, opisane niektóre procedury.
Tekstowy podgląd strony 37 (kliknij aby zobaczyć)
XR-MT3V
(3) Can you hear the sound of CD Changer Mechanism or clamper movement when power cord plug in
B
(4) Tuner troubleshooting
C
Does pin 3 of IC1302 and pin4 of IC1301 have 6.5V supply ?
NO
Does noise come out ?
NO
E
YES
Check the corresponding 8V power supply.
YES
Is pin 6 of IC1302 (VREF) in 5.3V NO
YES
Does pin 12 (VDD) of IC102 have 5V ?
NO
Please check the corresponding resistors R1341 and R1342.
YES
Please check the pin 1 of CN11 in 8V and the corresponding power circuit on the Tuner board. DZ103, L102, R177.
Please check the waveform of pin 5(RIN) NO and pin 4 (FIN) of IC1302 according to the corresponding operation? Is it correct ? Please check the connector of CN1201 and CN1302, YES CN1303 and CD MECHA..
Is the waveform of pin 3, 4 and 5 of IC102 correct when the tuner scans the frequency ?
NO
YES Please check the waveform of pin 1 (OUT-) and NO pin 7 (OUT+) of the IC1302? Is it correct ? The IC1302 is broken. YES
Please check the connection of the pins 3, 4 and 5 of IC102 to IC401.
Does pin 6 (TUN-) of IC102 have a 0V ?
NO
YES
Please check the pins 1 and 2 of IC102 that have 7.2MHz clock signal.
The Changer is broken.
Does pin 8 (VCC) of IC101 have 8V ? YES
NO
Please check the corresponding power circuit, Q113 and R157. The connection CN11.
