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There are currently no product reviews.
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thank u so much for this manual that was so cheap that i thought it was a scam but i gambled anyway because it was too good of a deal to pass up and behold,the manual has everything and details of everything even the screws and im still amazed and very happy with my manual .so take my word and jump on it before they realize how cheap they selling thier manuals..thank you so much for taking time to read my thoughts
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I do not have very much to say.
The price is quite covenient, delivery was better as promised (about 12 ours, against the specified 24 hours if I remember well), and the quality of the PDF is more than acceptable.
The Service Manual of Sansui R30 itself is also satisfactory: good graphic for schematics and layouts, simple and well structured.
Giovanni Bianchi
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Happy to find finally a schematic for this amplifier. The schematic is of good quality, the pcb layout is useless: all is black. Never the less, it is very easy to find the components on the board using the schematics.
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Hard to find manual was ready the next day. Scans were very legible (including schematics). All the essential parts of the service manual were present (adjustment procedure, schematics, and parts list). It would have been nice if the rest of the manual was included (disassembly procedure, theory of operation, etc.).
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The Service Manual for the Kenwood KR-V55R provided by owner-manuals.com was as described/advertised. The contents provided the necessary information to effect a diagnosis of the unit. The schematics above all else was instrumental in tracing the the signal flow from component to component.
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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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