KENWOOD KDC-X979 Service Manual

Cover page of KENWOOD KDC-X979 Service Manual

Service Manual for KENWOOD KDC-X979, downloadable as a PDF file.

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© 2004-02 PRINTED IN JAPAN
B53-0132-00 (N) 2704
CD RECEIVER
KDC-9026R
KDC-PSW9527
KDC-W9027
KDC-X979
SERVICE MANUAL
KDC-9026R
KDC-PSW9527
KDC-X979
KDC-W9027
TDF PANEL INFORMATION
MODEL
PARTS NO.
PANEL NAME
KDC-9026R
KDC-PSW9527
Y33-1790-60
TDF-M9000
KDC-X979
KDC-W9027
Y33-1790-61
TDF-M7000
*Size AA Battery
(Not Supplied)
* Escutcheon
(B07-3078-01)
(B07-3079-01)
Plastic cabinet assy
(A02-2731-13)
Mounting hardware assy
(J21-9823-03)
* DC cord
(E30-4942-05)
* Antenna adaptor
(T90-0552-05)
Screw
(N99-1734-05)
Lever
(D10-4674-04) x 2
*Screw set
(N99-1723-05)
* DC cord
(E30-6294-05)
*Remote controller assy
(A70-2040-05) : RC-505
*Remote controller assy
(A70-2026-05) : RC-420
* Depends on model. Refer to the parts list.
Panel assy
KDC-9026R (A64-3236-11)
Panel assy
KDC-W9027 (A64-3238-01)
Panel assy
KDC-PSW9527 (A64-3237-11)
Panel assy
KDC-X979 (A64-3235-11)
background image
© 2004-02 PRINTED IN JAPAN
B53-0132-00 (N) 2704
CD RECEIVER
KDC-9026R
KDC-PSW9527
KDC-W9027
KDC-X979
SERVICE MANUAL
KDC-9026R
KDC-PSW9527
KDC-X979
KDC-W9027
TDF PANEL INFORMATION
MODEL
PARTS NO.
PANEL NAME
KDC-9026R
KDC-PSW9527
Y33-1790-60
TDF-M9000
KDC-X979
KDC-W9027
Y33-1790-61
TDF-M7000
*Size AA Battery
(Not Supplied)
* Escutcheon
(B07-3078-01)
(B07-3079-01)
Plastic cabinet assy
(A02-2731-13)
Mounting hardware assy
(J21-9823-03)
* DC cord
(E30-4942-05)
* Antenna adaptor
(T90-0552-05)
Screw
(N99-1734-05)
Lever
(D10-4674-04) x 2
*Screw set
(N99-1723-05)
* DC cord
(E30-6294-05)
*Remote controller assy
(A70-2040-05) : RC-505
*Remote controller assy
(A70-2026-05) : RC-420
* Depends on model. Refer to the parts list.
Panel assy
KDC-9026R (A64-3236-11)
Panel assy
KDC-W9027 (A64-3238-01)
Panel assy
KDC-PSW9527 (A64-3237-11)
Panel assy
KDC-X979 (A64-3235-11)
background image
KDC-9026R/PSW9527
KDC-W9027/X979
2
BLOCK DIAGRAM
S-METER
AUDIO OUT
8V
BU5V
CD5V
BACK UP
FM
AM
CD
QUAL
CH
BU5V
KEY
BU5V
8V
8V
SW5V
BPF
9V
9V
9V
9V
SW5V
FL+B
FAC
AGC
BU5V
BU5V
SERVO
ILL+
SW5V
SW5V
SERVO
ILL+
8V
3.3V
8V
8V
8V
SW5V
PANEL5V
RDS
DECODER
BUFFER
REMO
RESET SW
KEY MATRIX
FL
SYSTEM
MPX
E-VOL
&
ACC DET
TEL MUTE
B.U DET
DRIVER
MUTE
POWER
IC
ACC
TEL MUTE
BACK UP
SP OUT (FL)
RESET
KEY ILL
IC14
IC2
IC1
IC4
IC8
IC9
Q303,304
AM+B
AGC
PRE MUTE
PRE MUTE
PRE MUTE
PRE OUT
(FRONT)
PRE OUT
(REAR)
(SUB WOOFER)
PRE OUT
AUX IN
OP AMP
OP AMP
OP AMP
SP OUT (FR)
SP OUT (RL)
SP OUT (RR)
EXT AMP
DIMMER
DIMMER
EXT.AMP.CON
ANT-CON
ANT CON
P-CON
P CON
WIRED REMO/
OPEL DISP I/F
IC9
IC13
IC12
IC11
Q207,208
Q205,206
Q203,204
BU5V
SW 5V
SW 14V
SERVO
FL+B
SW REG
A8V
Q1,2
Q3,601
Q4,5
Q6-8
Q9,602
BU5V
SW5V
SW14V
DC/DC
A8V
CD5V
IC16
MOTOR
DR
DR
MOTOR
IC15
DC/DC
ROTARY
ENCODER
IC7
LEVEL
SHIFT
LEVEL
SHIFT
IC8
u-COM
IC11
IC2
MASK
ROM
2.5V
ROM
FLASH
IC4
BPF
PANEL
SW5V
IC6
3.3V
SW3.3V
Q5
FL+B
Q4
FL3.3V
Q2,3
E2PROM
IC1
IC10
Q6,10
Q11-14
IC19
LED
LED
E2PROM
MICROPROCESSOR
SHIFT
LEVEL
L.P.F
DSP3.3V
x2
BAS S
L.P.F
L.P.F
L.P.F
DSP
1/2VCC
SRAM
Q29
Q27
Q26
Q25
IC18
Q23,24
(CENTER)
IC10
TUNER
CD
CH
MECHA
PANEL
TDF UNIT
SWITCH UNIT
(X16-208)
(X16-256)
(X34- )
(X16-253)
DISPLAY
UNIT
ELECTRIC UNIT
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KDC-9026R/PSW9527
KDC-W9027/X979
3
BLOCK DIAGRAM
SUB CIRCUIT UNIT (X16-2080-10)
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC1
E2PROM
E2PROM for security
DISPLAY UNIT (X16-2530-10/11)
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC1
Panel microprocessor
Panel control microprocessor
IC2
ROM IC
Graphic ROM
IC3
Flash ROM IC
For Display customize memory IC
IC4
AVR
For 3.3V power supply
IC5
AVR
For 2.5V power supply
IC6
Buffer IC
Level shift buffer IC (5V
3.3V)
IC7
Buffer IC
Level shift buffer IC (3.3V
5V)
IC8
Remote control IC
For Remote control sensor
IC9
Logic IC
Control for FL contrast
IC10
Analog IC
Spectrum analyzer IC
Q1
3.3V Regulator
While PAN5V is applied when 3.3V regulator output is +3.3V
Q2
2.5V Regulator
While PAN5V is applied when 2.5V regulator output is +2.5V
Q3,4
FL +B SW
FL +B (VDD1) is turned on when Q3 base level goes H
COMPONENTS DESCRIPTION
CD PLAYER UNIT
VREF
D.GND
BU.+5.0V
LOE SW
8EJE/LOS
12EJE SW
LOS SW
D.GND
S.+5.0V
EJECT
LOAD
S.GND
D.GND
D.GND
PON
S.GND
DATA
MUTE R
MUTE L
MSTOP
MRST
CLK
A.GND
A+8V
R-ch
L-ch
D.GND
D.GND
S.GND
S.GND
D.GND
D.GND
D.GND
SW
EF
A
C
B
TR COIL
FO COIL
APC
IC7
Q8
16.898MHz
CLOCK
IC6
LPF
IC10
SW
Q7
A3.3V
IC9
LOADING
MOTOR
SLED
MOTOR
DM2
REG
MICRO-
(CD MECHANISM
CONTROL)
PROCESSOR
IC5
CLOCK
4.00MHz
RF AMP/
SERVO
MP3 DECODER/
WMA DECODER/
1Mbit SRAM
PROCESSOR/
REG
D3.3V
IC4
16Mbit
DRAM
PWM
4CH
DRIVER
MOTOR
DRIVER
IC1
MOTOR
SPINDLE
DM3
ASSY
LIM SW
DM1
SPINDLE MOTOR
D3.3V
REG
IC2
TR
IC8
S2
S4
S5
S1
S3
OPTICAL PICKUP
(X32-5520-00)
BOARD
MAIN
DPU1 :
1.6V REG.
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KDC-9026R/PSW9527
KDC-W9027/X979
4
Ref No.
Application / Functions
Operation / Condition / Compatibility
Q5
3.3V SW
SW3.3V is turned on when Q5 base level goes L
Q6,200
FL 3.3V SW
FL +3.3V (VDD1) is turned on when Q200 base level goes H
Q7,8
Remote control ON SW
The power supply of IC8, 10 is turned on when Q10 base level goes H
Q9
FL BLK SW
VFD is turned on when Q9 base level goes H
Q10
Display blackout LED SW
Green LED is turned on when Q10 base level goes H
Q11
Red LED SW
Red LED is turned on when Q11 base level goes H
SWITCH UNIT (X16-2560-10)
Ref No.
Application / Functions
Operation / Condition / Compatibility
Q1
DSI LED SW
DSI LED blinks when Q1 base level goes H/L
Q2
KEY Illumination SW (Green)
KEY Illumination SW "ON" when the Q2 base level goes H
Q3
KEY Illumination SW (Red)
KEY Illumination SW "ON" when the Q3 base level goes H
Q4
KEY Illumination SW (Blue)
KEY Illumination SW "ON" when the Q4 base level goes H
CD PLAYER UNIT (X32-5520-00)
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC1
Motor driver
Loading & Eject motor driver
IC2
AVR
BU3.3V AVR
IC4
AVR
SW3.3V AVR (When CNTL is goes H, IC3 is actives)
IC5
Mechanism control micro processor
-
IC6
PWM driver
Focus, Tracking coil, Feed and Spindle motor driver IC
IC7
DSP
CD signal processor, RF amp, Servo control, MP3 & WMA decoder
IC8
EDO DRAM
Date buffer (16MB)
IC9
AVR
Audio 3.3V AVR (When P-ON level goes H, Q12, 13 are turned ON)
IC10
LPF
Audio LPF
Q1
Switching TR
When MRST goes L, Q1 is turned ON
Q2
Switching TR
When Q1 goes ON, Q2 is turned ON
Q6
Switching TR
When Q7 goes ON, Q6 is turned ON
Q7
Switching TR
When P-On goes H, Q7 is turned ON
Q8
APC
Auto power control & A 5V constant current circuit
Q9
Driver
1.6V AVR driver
Q10
Switching TR
Loading & Eject motor drive voltage selector
Q11
Switching TR
Guarantee of proper operation for between IC's Low level voltage
Q12
Switching TR
When Q13 base level goes H, Q12 is turned ON
Q13
Switching TR
When P-On goes H, Q13 is turned ON
ELECTRIC UNIT (X34-3050-11/21, X34-3052-71/72)
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC1
System control IC
System control microprocessor
IC2
E-VOL & tuner IC
E-VOL. FM/AM tuner & stereo decoder
IC3
Power supply IC
For A8V AVR
IC4
Audio power IC
Audio power amplifier
IC7
Power supply IC
-9V AVR (For 4.5V Pre-out)
IC8
Reset IC
When BU5V line voltage is less than 3.5V, this IC output line is "L"
IC9
Muting logic IC
Control for MUTE, P-ANT & RESET muting
IC10
Buffer IC
For spectrum analyzer
IC11~13
OP AMP
For 4.5V Pre-out
IC14
RDS decoder
Decode for RDS signal
COMPONENTS DESCRIPTION
background image
KDC-9026R/PSW9527
KDC-W9027/X979
5
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC15,16
Motor driver
Control for Panel mechanism motor
IC18
P-CON IC
Power control IC
IC19
Power supply IC
Switching regulator IC for CD4.7V
IC20
Analog SW
Logic IC for muting control
Q1,2
BU 5V AVR
While BU is applied when BU5V regulator output is +5V
Q3,601
SW5V AVR
When Q601base level goes H, SW5V regulator output is +5V
Q4,5
SW14V AVR
When Q5 base level goes H, SW14V regulator output is +14V
Q6~8
Audio 8V AVR
When Q6 base level goes H, A8V regulator output is +8.3V
Q9,602
Servo +B AVR
When Q602 base level goes H, S+B regulator output is +7.5V
Q11~14
Illumination & DC/DC +B AVR
When Q11 base level goes H, AVR output is +9.2V
Q15,16
Audio 10.5V AVR
When Q16 base level goes H, AVR output is +10.5V
Q17~19
Pre Amp & -9V AVR
Q18, 19 work as differential amplifier, Q17 wark as driver and -9.1V is supplied to OP
AMP for Pre-out
Q20~22
Pre Amp & +9V AVR
Q20, 22 work as differential amplifier, Q21 wark as driver and +9.4V is supplied to OP
AMP for Pre-out
Q23,24
P-ANT SW
When Q23 base level goes H, P-ANT SW output is +14V
Q25
Buffer
EX amp control buffer
Q26
Small lamp det. SW
When Q26 base level goes H, Q26 turned ON
Q27
BU detector
When Q27 base level goes H, Q27 turned ON
Q29
ACC detector
When Q29 base level goes H, Q29 turned ON
Q30,31
Muting driver
When base level goes L, muting driver is turned ON
Q32,33
Surge DET.
When Q32 base level goes H, Q32, 33 are turned ON
Q34
Muting driver
When Q34 base level goes L, muting driver is turned ON
Q201
Buffer
Noise detect buffer amp
Q202
E-VOL muting SW
When Q202 base level goes H, muting SW is turned ON
Q203~208
Pre-out muting SW
When base level goes H, Pre-output is muted
Q210
AGC
For AGC for spectrum analyzer
Q303,304
AM +B SW
When Q303 base level goes H, AM +B is out to tuner unit
ELECTRIC UNIT (X34-3060-10, X34-3062-71)
Ref No.
Application / Functions
Operation / Condition / Compatibility
IC1
OP AMP
Buffer amp for ADC input (DSP Lch)
IC2
OP AMP
Buffer amp for ADC input (DSP Rch)
IC3
OP AMP
LPF for DAC output (DSP Front)
IC4
OP AMP
LPF for DAC output (DSP Rear)
IC5
OP AMP
LPF for DAC output (DSP Sub & Center)
IC6
OP AMP
Sub output amp
IC7
Analog SW
Bus management SW (Dolby prologic II)
IC8
OP AMP
Bus management accumulator (Dolby prologic II)
IC9
OP AMP
Reference AVR
IC10
DSP
Audio DSP (24bit 2ch ADC & 6ch DAC)
IC11
SRAM
For DSP
IC12
Buffer IC
Level shift buffer IC(5V
3.3V)
IC13
AVR
D 3.3V AVR (For DSP)
IC14
AVR
A 3.3V AVR (For DSP)
Q1
AVR
3.3V regulator
Q2
AVR
3.3V regulator
COMPONENTS DESCRIPTION

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