Kenwood KDC-CPS89, Service Manual

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KDC-CX87/CPS87
4
COMPONENTS DESCRIPTION
Ref.No. Component Name Application/Function Operation/Condition/Compatibility
IC7 UPD784214GC091 Mechanism MI-COM. Mechanism and servo control
BR24C02F-W
or CAT24WC02JI
IC8 or M24C02WMN6T EEPROM LPS data back-up memory
or S-24C02BFJA
or 24LC02BT-ISN
IC9 S-80830ANNP Reset IC When BU 5V voltage is less than 3.0V, IC outputs "Lo".
IC10 KKZ05F D.R.I.V.E. IC D.R.I.V.E. system IC
IC11 LC3564BT-70 S RAM CD-TEXT data memory
Q1 MCH6101 APC Laser diode auto power control
Q4 DTA124EK 0 bit mute (L CH.) When 0 bit mute is activated, an emitter goes "Hi", and Q4 outputs "Hi".
Q5 DTA124EUA 0 bit mute (R CH.) When 0 bit mute is activated, an emitter goes "Hi", and Q5 outputs "Hi".
Q6 DTC343TK Mute SW (L CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and L
channel audio signal is muted.
Q7 DTC343TK Mute SW (R CH.)
When 0 bit mute or A mute drive is activated, a base goes "Hi", and R
channel audio signal is muted.
Q8 DTA124EK A mute drive
When audio mute of IC7 is activated, a base goes "Lo", and audio mute
drive signal is outputted.
Q9 2SB1202 Servo 5V AVR Q9 is combined with IC5's pin 26 and 27 , and works as a driver of AVR.
Q10 2SB1295 P-ON 5V SW
While base goes "Lo", P-ON 5V is supplied to the microprocessor
peripheral circuits.
Q11 DTC124EK Reset SW When System Reset has activated, a base goes "Hi", and Q11 is turned on.
Q12 DTC124EUA XTALEN SW While D.R.I.V.E. IC is operating, a base goes "Lo", and Q12 is turned off.
Q13 DTC124EUA CH CON SW
While CH CON or CH-CON2 mode is selected, a base goes "Hi", and Q13
is turned on.
Q14 DTA143EUA CH MUTE SW
When MUTE REQUEST to H/U is outputted, a base goes "Lo", and Q14 is
turned on.
Q16 2SC4081 SRV 8V AVR Q16 is combined with Q15 (X92-), and works as a pre-driver of AVR.
Q17 DTA143EK
SRV 8V AVR SW
When Q18's base goes "Hi", Q17 is turned on, and SVR 8V AVR is
Q18 DTC124EUA working.
Q19 DTC124EUA 7/9V SW
When a base goes "Hi", Q19 is turned on, and SVR 8V AVR is outp7V.
When a base goes "Lo", Q19 is turned off, and SVR 8V AVR is outp8.5V.
While BACKUP is applied, a base goes "Hi", and Q20 is turned on.
Q20 DTC124EK BU DETECTION SW When momentary power down has detected, a base goes "Lo", and Q20 is
turned off.
Q21 2SB1202
BU 5V AVR
While BACKUP is applied, AVR o5V.
Q22 2SC4081 Q21 and Q22 are inverted Darlington connection.
Q30 DTC114YUA Eccentric disc SW
When an eccentric disc is detected, Q30 is turned on, and a preceding
beam is made to be delayed.
Q31 DTC124EUA VIN SW
While spindle servo or disc loading/eject mode is selected, a base goes
"Hi", and Q31 is turned on.