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I really like this manual and it's reliable.I found and bought easly.thank you.
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Thank you very much. the Instruction corresponds to my expectations. Sent it in time. I don't regret that paid money.
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Good quality. Quick service. I recommend to everyone.
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Very good quality scan of the document. I am very pleased with what I got.
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PDF Contains
Technical Data, Mechanical data, Detailed Circuit diagram with components value, PCB layout. Actual PCBs Print. Component List, Spare parts code list and Input output detail. It cover LBB1211, LBB1212, LBB1213, LBB1216, LBB1217.
It is the actual Service Manual for SQ10
TROUBLESHOOTING GUIDE
DOES NOT LIGHT ON DISPLAY
Is the voltage at pin 1 and 2 of V651 about -11V?
No
Check FILAMENT(+) line of POWER BLOCK.
Yes
Is the voltage at pin 31 and 32 of V651 about -14V ?
No
Check FILAMENT(-) line of POWER BLOCK.
Yes
Is the voltage at pin 13 of IC651 about 5V?
No
Check AT+D5V line of POWER BLOCK.
Yes
Is the voltage at pin 30 of IC651 about -18V?
No
Check -20V line of POWER BLOCK.
Yes
Replace V651 or IC651.
D-3
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