Kenwood CKDC-395 User manual

© 2005-4 CREATED IN JAPAN
B53-0280-00 (N)0
CD RECEIVER
CKDC-395
CKDC-395A
CKDC-495
SERVICE MANUAL
VOL
AUD
FF
SET UP
SCAN RDM REP
/ AUTO
VOL
AUD
FF
SET UP
SCAN RDM REP
/ AUTO
VOL
AUD
FF
SET UP
SCAN RDM REP
/ AUTO
AME
Panel assy
CKDC-395 (A64-3687-02) Panel assy
CKDC-395A (A64-3688-02)
Panel assy
CKDC-495 (A64-3689-02)
Mounting hardware assy
(J22-0227-03)
Lever
(D10-4705-04) x2 Screw (4x16)
(N84-4016-48)
DC cord
(E30-6123-15) Escutcheon
(B07-3160-01)
Plastic cabinet
(A02-2746-01)
This palstic cabinet
does not include the 2 cushions.
For details, refer to the exploded view.
These 3 panel assies do not include any knobs.
For details, refer to the exploded view.
MANUFACTURED BY VISTEON
This product uses Lead Free solder.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

2
CKDC-395/395A/495
BLOCK DIAGRAM
MECHA
CD or MD
CHANGER
J2
E-VOL
IC10
&
AM AGC
Q501
FM AGC
L506
J4
TUNER
IC11
E2PROM
SYSTEM u-COM
IC1
IC7
RDS
DECODER
RST IC
IC8
PRE MUTE
Q351,352
IC4
POWER IC
MUTE LOGIC
IC6
SURGE DET
BU DET
ACC DET
Q51
Q52
Q53
J1
PAN5V
Q151
Q72,73
SERVO
VFD REG
IC15
POWER SUPPLY IC
IC3
ED1
VFD
with
VFD DRIVER
IC4 REMOTE
IC3
VOL
S11 KEY MATRIX
DSIQ155
.......
.......
J6
SERVO
A8V
BU5V
AUDIO OUT
AM+B
ANT
MPX OUT
MPX IN
800mV
1200mV
AUDIO OUT
BU5V
A8V
BACK-UP
SP OUT
BACK-UP
ACC
TEL MUTE
P-ANT
P-CON
PAN5
SERVO P-ANT SW5V
AM+B
A8V
BU5V
P-CON
SW5V
AM+B
AUDIO+B
VCC
ILLUMI
BU5V
ILLUMI
PAN5V BU5V
PRE OUT
KEY
:CHANGER
CD/MD RECEIVER
FM (E Type)
FM (J/K Type)
AM (J/K Type)
AM (E Type) : :
:
:
:1800mV
1372mV
600mV
855mV
3600mV
3600mV
ELECTRIC UNIT (X34-)
SWITCH UNIT (X16-)
7
VREF
L-ch
R-ch
A. GND
A8V
D. GND
BU5V
LOE/LIM SW
12EJE SW
LOS SW
S7.5V
LO/EJ
MOTOR
S. GND
VREF
VREF
2
2
4
DRV MUTEMUTE
DOUT
DATA
4
2
CLK
MSTOP
MRST
MUTE L
MUTE R
2
2H
L
12
5
2
4
3
20
21
13
15
1
14
9
7
6
8
18
12
11
10
22
19
EF
AC
B
TR COIL
FO COIL
APC SERVO
u-COM
IC2
Q1
16.934MHz
CLOCK
X1
DRIVER
MOTOR
IC3
PROCESSOR
LPF
IC4
8V SW
Q4
Q3SW
S3
S1
S2
D. GND
RF AMP
IC1
REF
5V REG
D2
S. GND
A. GND
D. GND
SLED
LOADING
5V SW
Q2
D. GND
D. GND
LOADING & SLED
MOTOR
SPINDLE MOTOR
AMP
Q5,6,D3
CURR.
DM1
DM2
SW +5V
A+5V
PICK-UP (DPU1)
CD PLAYER UNIT (X32-5750-00)
BOARD (X34-)
MOTHER
MECHA ASSY (X92-)
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

3
CKDC-395/395A/495
COMPONENTS DESCRIPTION
●ELECTRIC UNIT (X34-3920-1x)
Ref. No. Application / Function Operation / Condition
IC1 SYSTEM µ-COM System control.
IC3 POWER SUPPLY DC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output.
IC4 POWER IC Audio signal amplifier.
IC6 MUTE LOGIC Mute control.
IC7 RDS DECODER For other models.
IC8 RESET “L” when detection voltage goes below 3.6V.
IC10 E-VOL & TUNER E-VOL, Tuner, Stereo decode.
IC11 E2PROM Saves and writes tuner adjustment data.
IC15 VFD REGULATOR 11.3V output voltage for LED and VFD.
Q51 SERGE DET “ON” when the base goes “H”.
Q52 BU DET “ON” when the base goes “H”.
Q53 ACC DET “ON” when the base goes “H”.
Q71 SERVO+B CONTROL SW “ON” when the base goes “H”.
Q72,73 SERVO+B AVR Output voltage level : 7.5V.
Q74 IC3 CONTROL SW “ON” when the base goes “H” (Output voltage : 10.3V).
Q151 PANEL 5V SW “ON” when the base goes “L”.
Q155 DSI ILLUMI SW “ON” when the base goes “L”.
Q252 IC4 STBY SW “ON” when the base goes “L”.
Q330 Q351, 352 MUTE DRIVER “ON” when the base goes “L”.
Q351 Lch PRE MUTE SW Pre-output is muted when the base goes “H”.
Q352 Rch PRE MUTE SW Pre-output is muted when the base goes “H”.
Q501 AM RF AMP Adjusts for AM-RF gain.
●CD PLAYER UNIT (X32-5750-00)
Ref. No. Application / Function Operation / Condition
Generation of RF signal based on the signals from the APC circuit and pickup, and
IC1 RF AMPLIFIER responding generation of servo error (focusing error and tracking error) signals.
to CD-RW Detection of dropout, anti-shock, track crossing and off-tracking conditions, included
gain control function during CD-RW.
Focusing, tracking, sled and spindle servo processing.
IC2 CD SIGNAL PROCESSOR Automatic adjustment (focusing, tracking, gain, offset and balance) operations.
built-in µ-COM Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation processing) operations, and microcomputer function.
IC3 4ch BTL DRIVER Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
eject operation.
IC4 L.P.F.(LOW PASS FILTER) 2nd low pass filter for audio signals.
Q1 APC (AUTOMATIC POWER CONTROL) LD power control.
Q2 DIGITAL +5V SW “ON” When P.ON signal goes “L”.
Q3 Q4 SW “ON”When P.ON signal goes “L” (SW+5V is ON).
Q4 ANALOG +8V SW “ON”When P.ON signal goes “L” (Q3 is ON).
Q5, 6 CURRENT AMP Current driver.
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

4
CKDC-395/395A/495
●SWITCH UNIT (X16-3370-1x)
Ref. No. Application / Function Operation / Condition
IC3 REMOTE SENSOR
IC4 VFD DRIVER
Q21 PAN SW5V “ON” when the base goes “H”.
COMPONENTS DESCRIPTION
●SYSTEM µ-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No. Active Pin Name I/O Application Processing Operation
(H/L)
1 DC ERR I DC offset detection input
2LINE MUTE I Phone detection NAVI MUTE : Over 2.5V, TEL MUTE :Below 1V
3ROTARY CW I Rotary encoder input
4AVSS -
5TUN TYPE1 I E-VOL setting switch Refer to “TUNTYPE” on theTRUTHTABLE
6TUN TYPE2 I E-VOL setting switch Refer to “TUNTYPE” on theTRUTHTABLE
7AVREF1 -
8VFD DATAF I Data input from VFD driver
9 VFD DATAS O Data output to VFD driver
10 VFD CLK O Clock output toVFD driver
11 L VFD RST O Reset output to VFD driver Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
12 VFD CE O Chip enable output toVFD driver
13 ROTARY CCW I Rotary encoder input
14 L TDF DET I TDF panel detection TDF panel OFF : H, TDF panel ON : L
15 PWIC BEEP O Beep output
16~19 NC -
20 L TUN ADJ I For adjusting IC10 Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
21 TUN SD I Tuner search stop output H : Station exists, L : Station does not exist
22~24 NC -
25 AUD SDA I/O Volume + tuner I2C data input and output
MICROCOMPUTER’STERMINAL DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299

5
CKDC-395/395A/495
Pin No. Active Pin Name I/O Application Processing Operation
(H/L)
26 AUD SCL I/O Volume + tuner I2C clock input and output
27 H PWIC STBY O Power IC standby output Power IC ON : H, Power IC OFF : L
28 H VOL MUTE O E-VOL mute output L : Mute OFF, Hi-Z : Mute ON
29 L PWIC MUTE O Power IC mute output Power OFF :L, Standby : L, Tel mute : L
30 TUN FANC OUT O Tuner block (inside the µ-com) check OK : L, NG : H
31 RESET2 O Mute for reset Output L
32 NC -
33 VSS1 -
34 NC -
35 L ACC DET I ACC detection ACC exists :L, ACC does not exist : H
36 L BU DET I Momentary power-down detection BU exists : L
BU does not exist (Momentary power-down) : H
37 NC -
38 PS2-2 O Power supply control output Refer to “POWER IC CONTROL” on theTRUTH TABLE
39 PS2-1 O Power supply control output Refer to “POWER IC CONTROL” on theTRUTH TABLE
40 PS1-1 O Power supply control output Refer to “POWER IC CONTROL” on theTRUTH TABLE
41 PS1-2 O Power supply control output Refer to “POWER IC CONTROL” on theTRUTH TABLE
42 PS1-3 O Power supply control output Refer to “POWER IC CONTROL” on theTRUTH TABLE
43,44 NC -
45 CD MUTE I CD mute request L : Mute request
46 L CD MSTOP O CD mecha u-com stop H : mecha µ-com operates, L :mecha µ-com is stopped
47 CD LOE LIM SW I CD detection (chucking switch) H : Loading is finished, L : Disc does not exist
48 CD LOEJ I/O CD motor control Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
49 CD MOTOR O CD motor control Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
50 NC -
51 L CD MRST O CD mecha µ-com reset H :Normal condition, L : Reset
52 CD SCL I/O CD mecha I2C clock output
53 CD DISC12 SW I 12cm CD detection
54 CD LOS SW I CD loading detection
55 CD SDA I/O CD mecha I2C data input and output
56 OEM DISP CE I/O External display chip enable External display
57 OEM DISP CLK I/O External display clock External display
58 OEM DISP DATA I/O External display chip data External display
59 DSI O DSI control DSI ON : H, DSI OFF : L, TDF DET=H (DSI blinks)
60 L RESET I
61 NC -
62 L PON FL O VFD power supply ON VFD ON : H, VFD OFF : L
TDF DET H (DSI blinks) : L, TDF DET L :H
63 KEY REQ I Communication request fromVFD driver L : Key input
64 NC -
MICROCOMPUTER’STERMINAL DESCRIPTION
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TEL [phone] QQ 376315150 892498299 TEL [phone] QQ 376315150 892498299