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Easy and secure way to get a complete service manual of a vintage hifi component. Only some parts of the print copy are dificult to read. Nice price!
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The manual is an excellent reproduction with complete schematics, made troubleshooting and repair a simple process.
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Up to now you are the BEST! Prompt-efficient and so reasonable ! I have been after SONY service manual for quite some time !Thank you very much ! I can recomend your service to
all my collegagues ! V.Bergfield .
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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
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7.1.5 Circuit Description
A
1 Protection circuit when the edge of speaker is oveload
R325 330 R317 0.22
3 FAN detection circuit
CN305 +5.6V R405 R407 10k 1k C402 0.01
POWER Assy A
FL
FAN+ FANFAN.STOP
1 2 3
D401 R408 100k
B
R327 1.8k D301 Q305
To µ-COM FAN DCT
FRONT Assy
SP edge GND FL +5V R4243 10k To µ-COM ODCT
D410 UDZS5.1B
D303 DAP202K
When FAN is not connected between FAN+ and FAN-, or an alien substance is clogged up in the FAN at the FAN LOCK status, FAN STOP becomes the same electric potential as the FAN- (Low). � µ-COM detects it, and turn the power OFF.
B
A speaker (6�) is connected between FL and GNDFL normally. Q305 (306) (345) (346) (383) does not work because the voltage of A point is higher than B point. If a resistance value between FL and GNDFL becomes less than 1.2�, Q305 (306) (345) (346) (383) turns ON. And ODCT becomes with negative component of output level. � µ-COM detects it, and turn the power OFF.
C
2 DC detection circuit of SP terminal
R331 22k FL R332 22k FR R371 22k RL R372 22k RR DDCT R392 22k C R396 10k C391 220/10 Q384 Q385 +5V
POWER Assy
R4244 47k
D
FRONT Assy
� Q384 and Q385 are turning OFF together normally. (1) When the DC voltage of the plus (+) side was generated on the SP edge When the DC voltage of the plus (+) side was generated in L ch or R ch, Q384 turns ON and DDCT becomes Low level if VB of Q384 becomes higher than operating point. � µ-COM detects it, and turn the power OFF. (2) When the DC voltage of the minus (-) side was generated on the SP edge Q385 turns ON with + side in reverse, and DDCT works.
E
F
58
1 2
VSX-C100-S
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