IC1SYSTEM µ-COMSystem control.
IC3POWER SUPPLYDC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output.
IC4POWER ICAudio signal amplifier.
IC6MUTE LOGICMute control.
IC7RDS DECODERFor other models.
IC8RESET“L” when detection voltage goes below 3.6V.
IC10E-VOL & TUNERE-VOL, Tuner, Stereo decode.
IC11E2PROMSaves and writes tuner adjustment data.
IC15VFD REGULATOR11.3V output voltage for LED and VFD.
Q51SERGE DET“ON” when the base goes “H”.
Q52BU DET“ON” when the base goes “H”.
Q53ACC DET“ON” when the base goes “H”.
Q71SERVO+B CONTROL SW“ON” when the base goes “H”.
Q72,73SERVO+B AVROutput voltage level : 7.5V.
Q74IC3 CONTROL SW“ON” when the base goes “H” (Output voltage : 10.3V).
Q151PANEL 5V SW“ON” when the base goes “L”.
Q155DSI ILLUMI SW“ON” when the base goes “L”.
Q252IC4 STBY SW“ON” when the base goes “L”.
Q330Q351, 352 MUTE DRIVER“ON” when the base goes “L”.
Q351Lch PRE MUTE SWPre-output is muted when the base goes “H”.
Q352Rch PRE MUTE SWPre-output is muted when the base goes “H”.
Q501AM RF AMPAdjusts for AM-RF gain.
Generation of RF signal based on the signals from the APC circuit and pickup, and
IC1
IC2
IC34ch BTL DRIVER
IC4L.P.F. (LOW PASS FILTER)2nd low pass filter for audio signals.
Q1
Q2DIGITAL +5V SW“ON” When P. ON signal goes “L”.
Q3Q4 SW“ON” When P. ON signal goes “L” (SW+5V is ON).
Q4ANALOG +8V SW“ON” When P. ON signal goes “L” (Q3 is ON).
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Q5, 6CURRENT AMPCurrent driver.
RF AMPLIFIER respondinggeneration of servo error (focusing error and tracking error) signals.
to CD-RWDetection of dropout, anti-shock, track crossing and off-tracking conditions, included
gain control function during CD-RW.
Focusing, tracking, sled and spindle servo processing.
CD SIGNAL PROCESSORAutomatic adjustment (focusing, tracking, gain, offset and balance) operations.
built-in µ-COMDigital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data
interpolation processing) operations, and microcomputer function.
Focusing coil, tracking coil, spindle motor and sled motor driver, disc loading and
IC3REMOTE SENSOR
IC4VFD DRIVER
Q21PAN SW5V“ON” when the base goes “H”.
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MICROCOMPUTER’S TERMINAL DESCRIPTION
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TEL 13942296513 QQ 376315150 892498299
● SYSTEM µ-COM : IC1 on X34- (ELECTRIC UNIT)
TEL
Pin No.
1DC ERRIDC offset detection input
2LINE MUTEIPhone detectionNAVI MUTE : Over 2.5V, TEL MUTE : Below 1V
3ROTARY CWIRotary encoder input
4AVSS5TUN TYPE1IE-VOL setting switchRefer to “TUN TYPE” on the TRUTH TABLE
6TUN TYPE2IE-VOL setting switchRefer to “TUN TYPE” on the TRUTH TABLE
7AVREF18VFD DATAFIData input from VFD driver
9VFD DATASOData output to VFD driver
10VFD CLKOClock output to VFD driver
11LVFD RSTOReset output to VFD driver
12VFD CEOChip enable output to VFD driver
13ROTARY CCWIRotary encoder input
14LTDF DETITDF panel detectionTDF panel OFF : H, TDF panel ON : L
15PWIC BEEPOBeep output
16~19NC-
20LTUN ADJIFor adjusting IC10
21TUN SDITuner search stop outputH : Station exists, L : Station does not exist
22~24NC-
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25AUD SDAI/O Volume + tuner I2C data input and output
Active
13942296513
(H/L)
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Pin NameI/OApplicationProcessing Operation
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Display OFF, Key reset, TDF panel OFF : L
Display ON, Key scan : H
Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,
PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z
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MICROCOMPUTER’S TERMINAL DESCRIPTION
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Pin No.
TEL 13942296513 QQ 376315150 892498299
TEL
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Active
(H/L)
26AUD SCLI/O Volume + tuner I2C clock input and output
27HPWIC STBYOPower IC standby outputPower IC ON : H, Power IC OFF : L
28HVOL MUTEOE-VOL mute outputL : Mute OFF, Hi-Z : Mute ON
29LPWIC MUTEOPower IC mute outputPower OFF : L, Standby : L, Tel mute : L
30TUN FANC OUTOTuner block (inside the µ-com) checkOK : L, NG : H
31RESET2OMute for resetOutput L
32NC33VSS134NC35LACC DETIACC detectionACC exists : L, ACC does not exist : H
36LBU DETIMomentary power-down detection
37NC38PS2-2OPower supply control output
39PS2-1OPower supply control output
40PS1-1OPower supply control output
41PS1-2OPower supply control output
42PS1-3OPower supply control output
43,44NC45CD MUTEICD mute requestL : Mute request
46LCD MSTOPOCD mecha u-com stop
47CD LOE LIM SWICD detection (chucking switch)H : Loading is finished, L : Disc does not exist
48CD LOEJI/O CD motor control
49CD MOTOROCD motor control
50NC51LCD MRSTOCD mecha µ-com resetH : Normal condition, L : Reset
52CD SCLI/O CD mecha I2C clock output
53CD DISC12 SWI12cm CD detection
54CD LOS SWICD loading detection
55CD SDAI/O CD mecha I2C data input and output
56OEM DISP CEI/O External display chip enableExternal display
57OEM DISP CLKI/O External display clockExternal display
58OEM DISP DATA I/O External display chip dataExternal display
59DSIODSI controlDSI ON : H, DSI OFF : L, TDF DET=H (DSI blinks)
60LRESETI
61NC-
62LPON FLOVFD power supply ON
63KEY REQICommunication request from VFD driverL : Key input
64NC-
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Pin NameI/OApplicationProcessing Operation
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BU exists : L
BU does not exist (Momentary power-down) : H
Refer to “POWER IC CONTROL” on the TRUTH TABLE
Refer to “POWER IC CONTROL” on the TRUTH TABLE
Refer to “POWER IC CONTROL” on the TRUTH TABLE
Refer to “POWER IC CONTROL” on the TRUTH TABLE
Refer to “POWER IC CONTROL” on the TRUTH TABLE
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H : mecha µ-com operates, L : mecha µ-com is stopped
Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
Refer to “CD MECHA CONTROL OPERATION”
on the TRUTH TABLE
VFD ON : H, VFD OFF : L
TDF DET H (DSI blinks) : L, TDF DET L : H
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CKDC-395/395A/495
MICROCOMPUTER’S TERMINAL DESCRIPTION
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Pin No.
65REMOTEIRemote control input
66NC67VSS068VDD169X270X171TEST-
General models commercially-designated as pure KENWOOD brand (Initial value)
TEL
Initial value setting
General models commercially-designated as pure KENWOOD brand (CRSC is changed)
Multi-Path Band-Path Gain=12dB, Multi-Path Charge Current=0.4µA, De-Emphasis=75µS
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Active
(H/L)
13942296513
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Pin NameI/OApplicationProcessing Operation
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TYPE 1TYPE 2
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LL
HL
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TEL 13942296513 QQ 376315150 892498299
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• POWER SUPPLY IC (IC3) CONTROL
SEL1 (Pin No. 11)
PS1-2PS1-3PS2-1ILLUMIP-CONP-ANT
LLLOFFOFFOFF
LLHONOFFOFF
HLHONONOFF
HHHONONON
SEL2 (Pin No. 12)
PS1-1PS2-2AUDIOSW5AM
LLOFFOFFOFF
HLONONOFF
HHONONON
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• CD MECHA CONTROL OPERATION
CD LOEJCD MOTORCD MECHA OPERATION
LHLoad
HHEject
Hi-ZLStop
Hi-ZHBrake
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MICROCOMPUTER’S TERMINAL DESCRIPTION
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● CD MECHANISM µ-COM : IC2 on X32- (CD PLAYER UNIT)
6FBALO Focusing balance adjustment output (PWM output).
7NRFDETIRF detection signal input.L : Detection
8OFTIOff-tracking signal input.H : Detection
9BDOIDrop-out signal input.H : Detection
10LDONO Laser-on signal output.H : Focus ON
11DSLBO DSL balance output.
12DVDD1-Power supply for digital circuit.
13DVSS1-GND for digital circuit.
14AVSS2-GND for analog circuit.For DSL, PLL and A/D converter
15DSLFI/O Loup filter for DSL and bias output for ARF.
16ARFIRF signal input.
17RFSWIDSL circuit time constant switch.
TEL
18PLLFI/O Loup filter for PLL.
19PLLF2I/O Loup filter character switch for PLL.
20IREFIReference current input.
21RFENVIRF envelope signal input.
22TRCRSITracking cross signal input.
23TEITracking error signal input.
24FEIFocusing error signal input.
25AVDD2-Power supply for analog circuit.For DSL, PLL and A/D converter
26AVSS1-GND for analog circuit.For Lch/Rch audio output
27OUTRO Rch audio output.
28AVDD1-Power supply for analog circuit.For Lch/Rch audio output
29OUTLO Lch audio output.
30DVSS3-GND for digital circuit.
31CSEL32NC-No connection.
33ASEL34MSEL035MSEL136~39NC-No connection.
40VREFP-Reference power supply input for A/D converter.
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41HOT-
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Active
(H/L)
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CKDC-395/395A/495
MICROCOMPUTER’S TERMINAL DESCRIPTION
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Pin No.
428EJE SW43
44LOE/LIM SWI
45~49NC-No connection.
50DVDD2-Power supply for digital circuit.
TEL 13942296513 QQ 376315150 892498299
51X1IMain clock input.
52X2O Main clock output.
53DVSS2-GND for digital circuit.
54XSUB155NC-No connection.
56TEST1-Test terminal.Normal condition : “H” fixed
57TEST2-Test terminal.Normal condition : “H” fixed
58,59NC-No connection.
60DRV MUTEO Driver mute control.L : Mute ON, H : Mute OFF
61LMUTE LO Audio Lch mute output.
62LMUTE RO Audio Rch mute output.
63LRSTILSI reset input.
TEL
64OCD CLK65LMSTOPIStandby detection.
66DATAI/O
67SBIOIData input.During serial writer is connected.
68LCLKI/O
69TXO Digital audio interface signal output.
70NC-No connection.
71XSEL72MCNTILoading control / Eject control.L : OFF (Host control), H : Mecha µ-com control
73P. ONO Audio & Servo power supply control.L : Power supply ON. H : Power supply OFF
74,75NC-No connection.
76CD-RWO CD-RW control.H : CD-RW, L : Normal disc
77NC-No connection.
78DVDD3-Power supply for digital circuit.
79FODO Focusing drive output (PWM output).
80TRDO Tracking drive output (PWM output).
* The display is cleared by pressing the key for more
than 2 seconds.
• When pressed for less than 1 second : Panel open/
(Display) : _ _ _ X xxxxMAX 600,000 (times)
* The display is cleared by pressing the key for more
than 2 seconds.
Effective : Rxxx (x : number)
Not effective (When not able to read) : R – – –
Not effective (When version is different) : R✳✳✳
(Display)
Adjustment complete : E2OK
Adjustment not completed : E2ER
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Communication error : ICER
* When other than “E2P _ OK _ _” , Pin No. 30 will
become “H”.
Error No. 3 → Communication error (Error No. 1 is the
most recent error.)
(Display)
Communication OK : ICOK
Communication error : ICER
Not detected : En – – (n : 1~3)
Detected : En✳✳ (✳✳ : error code)
* The display is cleared by pressing the key for more
than 2 seconds.
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CKDC-395/395A/495
SPECIAL MODE
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● DC offset error detection confirmation mode
Confirmation mode :
While depressing PRESET “3” key and PRESET “6” key
simultaneously, press on the “RESET” button.
(Display) Detected : DCER
* By pressing “CLK” key while “DCER” is being displayed,
detection status is cleared. This will result in the display of
“DCOK”.
TEL 13942296513 QQ 376315150 892498299
Release Method : Press “RESET” button.
● Mechanism memory clear confirmation mode
Confirmation mode :
While depressing “ATT” key and “Q” key simultaneously,
press “RESET” button.
(Display) : MCLR
*Two seconds after the confirmation mode boots up, Mecha-
nism memory clear as a result is displayed.
(Display) Clear status display normal completion : CD _ O
Release Method : Press “RESET” button.
TEL
3
Not detected : DCOK
Clear status display abnormal completion : CD _ –
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After replacing the following parts, adjust as follows.
REPLACED PARTSADJUSTMENT ITEMS
Ref. No.
IC10E-VOL & TUNERYESYESYES
IC11E2PROMYESYESYES
L507VCO COILYESYESYES
L5081st AM MIX IFTYES-L5092nd AM MIX IFT-YESL518FM ANTENNA COIL--YES
D504 VARIABLEYESYESYES
D506 VARIABLEYESYESYES
X501
● 1st AM MIX / 2nd AM MIX ADJUSTMENT
ADJUSTMENT POINT : L508 (1st AM MIX) / L509 (2nd AM
MIX)
VOLTAGE VALUE CHECK POINT : S-METER check land (X34-)
Adjust so that S-METER voltage value becomes maximum.
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ADJUSTMENT
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Function / Parts name
CAPACITANCE DIODE
CAPACITANCE DIODE
CRYSTAL RESONATOR
5
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1st AM MIX 2nd AM MIX FM antenna
YESYESYES
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● FM/AM channel space switching
When in the conditions of ACC ON and POWER OFF, while
depressing PRESET “1” key and PRESET “5” key simultaneously, press “SRC” key.