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Great Manual! It contains all the wiring schematics and mechanical exploded views that are essential for service and repair. I was surprised I even found this for such an old machine. Only wish I knew of this site many years ago.
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Great manual very clear copied. You are making an incredible job. I appreciate a lot the rapidity and your efficiency. Thanks a lot
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Good pdf of the service manual for this unit. Includes disassembly instructions, full schematics, board layouts, parts lists and diagnostic information. Some information is in the pdf twice (single pages, and split pages), but that could be how it was originally generated by panasonic, or perhaps the idea is to make it eaiser to put onto 8.5 x 11" pages.
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OEM manual provided all schematics, board layouts and component specs necessary to facilitate unit maintenance. All pages were clear and readable.
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7.3.4.3 Troubleshooting Step 1: Connectors
A
CN701, CN702 Are the connectors securely inserted ? Yes
6
IC703 (pin 1), IC702 (pin 7)
3.3 V Reg. output / 1.8 V Reg. input Is IC703 abnormally hot? Yes No
No Insert the connectors securely.
Is the voltage 3.3 V ? Yes
No
Replace IC703.
To STEP 2 The output and GND may be short-circuited. Check the path between them.
Step 2: Power supply
B
7
IC762 (pins 37, 47) FLASH ROM
1
CN702 (pin 4) Is the voltage 5V? Yes
5 V input Is there any loose connection of CN702? Yes Is the voltage 3.3 V ? Yes Check the MOTHER Assy. No Check the parts and patterns in the path.
No
No
8
IC761 (pins 1,3,9,14,27,43,49) SDRAM
To STEP 1
2
C
IC703 (pin 3)
3.3 V Regulator IC input
Is the voltage 3.3 V ? Yes
No
Check the parts and patterns in the path.
Is the voltage 5V? Yes
No
Check the patterns in the path.
9
IC953 (pin 14) Is the voltage 3.3 V ? Yes
5-3 Converter
No
Check the parts and patterns in the path.
3
IC951 (pin 14)
3-5 Converter
D
Is the voltage 5V? Yes
No
Check the parts and patterns in the path.
10 IC701 (pins 16,33,64,76,112) USB Media control IC
Is the voltage 3.3 V ? Yes
No
Check the parts and patterns in the path.
4
IC771 (pin 5)
USB Power SW
Is the voltage 5V? Yes
E
No
Check the parts and patterns in the path.
11
IC702 (pin 1)
1.8 V Regulator output
5 IC7814 (pins 14, 15) DAC
Is the voltage 5V? Yes No Check the parts and patterns in the path.
Is the voltage 1.8 V ? Yes
No
Is IC702 abnormally hot? Yes
No
Replace IC702.
The output and GND may be short-circuited. Check the path between them.
A
F
116
1 2
VSX-516-K
3 4
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