Sony MHC-V83D

MHC-V83D
28
Sony CONFIDENTIAL
For Authorized Servicer
The Output from SMPS board is checked. Is following power voltage up to standard?
Standby Demo mode Power On
NO6500 Pin1, 4, 5 NO6501 Pin6, 7, 8, 9
AC IN
Yes
No
Yes
END
No
Check whether the state of the Cable and Outlet are normal. If there are no problems, check circumference circuit for Main ON on Output of the Motherboard mount side.
Replaces SMPS board if it is not up to standard.
The Power Control signal to SMPS board is checked. Is following power voltage OK? Main ON Standby Demo mode Power On NO6500 Pin9 Low (0V) Hi (3.3V) Hi (3.3V)
17.4V±5%
17.4V±5%
58.5V±5% 58.5V±5%
17.4V±5% 58.5V±5%
(1) AC input (2) Fuse (3) MAIN power transformer (4) NO6500 connector
Pin 1: Audio (+17V) Pin 3: Audio (GND) Pin 4: LED (+17V) Pin 5: LED (+17V) Pin 6: LED (GND) Pin 7: LED (GND) Pin 8: AC DET Pin 9: Main ON Pin 10: Network ON Pin 11: Latch ON Pin 12: Low/ High AC
(5) NO6501 connector Pin 1: PGND Pin 3: PGND Pin 4: PGND Pin 5: PGND Pin 6: PVDD (DC+58.5V) Pin 7: PVDD (DC+58.5V) Pin 8: PVDD (DC+58.5V) Pin 9: PVDD (DC+58.5V)
(1)
(2)
(3)
(5)
(4)
SECTION 5
TROUBLESHOOTING
SMPS Board Diagnosis Flow
SYSSET
2020/06/2222:32:42(GMT+09:00)