Kenwood KDC-X959, Руководство по обслуживанию

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KDC-X959/Z939,Z738,Z838W
4
Q16 2SB1443
A.+10V AVR When Q17's base goes Hi, AVR o10V.
Q17 2SC4081
Q18 2SA1576A
Q18 and Q20 work as a differential amplifier, Q19 works as a driver,
Q19 2SC4081 PRE-AMP -9V AVR
and -9.3V is supplied to OP AMP.
Q20 2SA1576A
Q21 2SC4081
Q21and Q22 work as a differential amplifier, Q23 works as a driver,
Q22 2SC4081 PRE-AMP +9V AVR
and +9.7V is supplied to OP AMP.
Q23 2SA1576A
Q26 2SB1277(Q,R)
P-CON SW
When Q29's base goes Hi, Q26 is turned on, and P-CON signal is outputted.
Q29 DTC114YUA or UN5214 Works during POWER ON mode.
Q27 2SA1576A P-CON. protection SW Protect Q26 by turning ON when P-CON output is grounded.
Q28 DTA124EUA or UN5112 P-CON. protection inhibit SW Prevents Q27 tuning ON during start-up after power ON.
While BACKUP is applied, a base goes Hi, and Q30 is turned on.
Q30 2SC4081 BU detection SW When momentary power down has detected, a base goes Lo, and
Q30 is turned off.
Q31 2SC4081 ACC detection SW While ACC is applied, a base goes Hi, and Q31 is turned on.
Q32 DTA124EUA or UN5112 Mute driver for R Ch. When BU detection SW or System RESET or MI-COM.'s MUTE is
Q33 DTA124EUA or UN5112 Mute driver for L Ch. working, a base goes Lo, and Q32 and Q33 are turned on.
Q34 2SC4081 AGC for spectrum analyser
Q35 DTC124EUA or UN5212 E. VOL. mute SW
When BU detection SW or MI-COM.'s mute is working, a base goes
Hi, and Q35 is turned on.
Q36 DTC143TUA or UN5216 Noise buffer
Q37 DTC143TUA or UN5216 Audio mute SW (Front L) When Q37's base goes Hi, Pre-output is muting.
Q38 DTC143TUA or UN5216 Audio mute SW (Front R) When Q38's base goes Hi, Pre-output is muting.
Q39 DTC143TUA or UN5216 Audio mute SW (Non Fader R) When Q39's base goes Hi, Pre-output is muting.
Q40 DTC143TUA or UN5216 Audio mute SW (Non Fader L) When Q40's base goes Hi, Pre-output is muting.
Q41 DTC143TUA or UN5216 Audio mute SW (Rear L) When Q41's base goes Hi, Pre-output is muting.
Q42 DTC143TUA or UN5216 Audio mute SW (Rear R) When Q42's base goes Hi, Pre-output is muting.
Q43 DTC124EUA or UN5212
FM+B SW
When Q43's base goes Hi, Q44 is turned on, and A.+8V is supplied to
Q44 CPH3105 the F/E. Works during FM reception mode or RDS reception mode.
Q45 DTC124EUA or UN5212
AM+B SW
When Q45's base goes Hi, Q46 is turned on, and A.+8V is supplied to
Q46 CPH3105 the F/E. Works during AM reception mode.
Q52 DTC143TUA or UN5216 Composite signai buffer
Q101 DTA114YUA or UN5114 DSI LED SW When a base goes Lo, Q101 is turned on, and DSI illumination LED is lit.
Q103 DTC124EUA or UN5212 AUX/CD selector SW
When a base goes Hi, AUX inputs are selected.
When a base goes Lo, CD inputs are selected.
Q111 2SB1277(Q,R)
P-ANT SW
When Q112's base goes Hi, Q111 is turned on, and P-ANT signal is outputted.
Q112 DTC114YUA or UN5214 Works during FM/AM reception mode or RDS reception mode.
Q201 2SC4081 BU5V discharge SW When BU OFF is detected, Q201 is turned on during the base Hi condition.
Q305 DTA114YUA or UN5114 EJECT LED SW
When a base goes Lo, Q305 is turned on, and EJECT illumination
LED is lit.
Q306 DTA114YUA or UN5114 EJECT LED SW
When a base goes Lo, Q306 is turned on, and EJECT illumination
LED is lit.
Q472 DTC144EUA or UN5213 MECHA. AVR SW When a base goes Hi, Q472 is turned on, and MECHA. AVR operation stops.
Q473 2SC4081
BU 5V AVR
While BACKUP is applied, AVR o5V.
Q474 2SA2057 Q473 and Q474 are inverted Darlington connection.
Q475 2SC4081
Voltage converter Q475 and Q476 work as voltage coverter for BU 5V AVR, and it 9V.
Q476 2SA2057
Q703 2SA2057
OEL PAN5V AVR
While BACKUP is applied, AVR o5V.
Q704 2SC4081 Q703 and Q704 are inverted Darlington connection.
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
COMPONENT DESCRIPTION
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299