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Very easy site. Great service and quick release for download. Manuals are of good quality.
Joop - The Netherlands
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Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
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Detailed SONY CFD980 Service Manual at an easy to find one stop shopping. Make my radio hobby technically interesting. Thanks.
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KDC-MPV619/MPV7019/MPV7020/MV6521
COMPONENTS DESCRIPTION
Ref.No.
Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q19 Q20 Q21 Q22 Q26 Q27 Q32 Q29 Q30 Q28 Q31 Q33 Q34 Q42 Q43 Q45 Q47 Q46 Q48 Q51 Q52 Q53 Q54 Q55
Component Name
Application/Function
Operation/Condition/Compatibility
When a base goes Lo, Q7 is turned on for driving NON-F mute SW. When a base goes Lo, Q8 is turned on for driving Front and Rear mute SW. AUX selected : (Q9,Q10)=(ON,ON) Changer selected : (Q9,Q10)=(OFF,OFF) While BACKUP is applied, BU 5V AVR outputs +5V. Q11 and Q12 are inverted Darlington connection. While a base goes Lo, SW 5V is supplied to the microprocessor peripheral circuits. When Q14's base goes Hi, Q15 is turned on, and A.+8V AVR outputs +8.3V. Q14 and Q15 are inverted Darlington connection. A.+8V AVR and SERVO +B AVR ON/OFF control
DTA124EUA or KRA303 Mute driver for pre-out mute SW DTA124EUA or KRA303 Mute driver for pre-out mute SW DTC144EUA or UN5213 DTA124EUA or KRA303 2SC4081 or 2SD1819A 2SA2057 BU 5V AVR AUX/Changer selection SW
2SA1576A or 2SB1218A SW 5V 2SC4081 or 2SD1819A A.+8V AVR 2SA2057 DTC124EUA or UN5212 SW14V DTA124EUA or KRA303 2SD2375 DTC124EUA or UN5212 ILL +B AVR SW DTA124EUA or KRA303 2SB1184 ILL +B AVR 2SC4081 or 2SD1819A DTC144EUA or UN5213 Small lamp detection SW DTC114YUA or UN5214 2SB1277(Q,R) or 2SB1434 P-CON SW DTA124EUA or KRA303 P-CON. protection inhibit SW 2SA1576A or 2SB1218A P-CON. protection SW DTC114YUA or UN5214 2SB1277(Q,R) or 2SB1434 P-ANT SW SERVO +B AVR
While Q16's base goes Hi, Q17 is turned on, and A.+8V AVR and SERVO +B AVR are working. When Q18's base goes Hi, SERVO +B AVR outputs +7.6V. ILL +B AVR ON/OFF control While Q19's base goes Hi, Q20 is turned on, and ILL +B AVR is working. While Q22's base goes Hi, Q21 is turned on, and AVR outputs +10.7V. Q21 and Q22 are inverted Darlington connection. When vehicle small lamps turn on, Q26's base goes Hi, and Q26 is turned on . When Q27's base goes Hi, Q32 is turned on . Works during POWER ON mode. Prevents Q30 tuning ON during start-up after power ON. Protect Q32 by turning ON when P-CON output is grounded. When Q28's base goes Hi, Q31 is turned on. Works during FM/AM reception mode or RDS reception mode. While BACKUP is applied, a base goes Hi, and Q33 is turned on. When momentary power down has detected, a base goes Lo, and Q33 is turned off. While ACC is applied, a base goes Hi, and Q34 is turned on. When BU detection SW or MI-COM.'s mute is working, a base goes Hi, and Q42 is turned on. When Q45's base goes Hi, Q47 is turned on, and A.+8V is
2SC4081 or 2SD1819A BU detection SW 2SC4081 or 2SD1819A ACC detection SW DTC124EUA or UN5212 E. VOL. mute SW DTC143TUA DTC124EUA or UN5212 FM+B SW 2SB1277(Q,R) or 2SB1434 DTC124EUA or UN5212 2SB1277(Q,R) or 2SB1434 DTC143TUA AM+B SW 2SC4081 or 2SD1819A CD+5V AVR SW Composite signal buffer DTA114YUA or UN5114 EJECT illumination/DSI SW DTA114YUA or UN5114 Guide illumination SW 2SA1576A or 2SB1218A Panel 5V SW Noise buffer
supplied to the F/E. Works during FM reception mode or RDS reception mode. When Q46's base goes Hi, Q48 is turned on, and A.+8V is supplied to the F/E. Works during AM reception mode. When a base goes Hi, CD+5V AVR is working. When a base goes Lo, Q53 is turned on. When a base goes Lo, Q54 is turned on. When a base goes Lo, Q55 is turned on.
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