DAEWOO KDC-MPV619, KDC-MPV7019, KDC-MPV7020, KDC-MV6521 Service Manual

2002-1 PRINTED IN JAPAN

B51-7893-00 (N)3415

Antenna adaptor (T90-0523/0534-05) : KDC-MV6521

Screw set (N99-1656-05)

Screw set (N99-1719-05) : KDC-MPV619 : KDC-MPV7019 : KDC-MPV7020

Lever (D10-4589-04)x2

Mounting hardware assy (J21-9716-03)

Escutcheon (B07-3055-02)

Plastic cabinet assy (A02-1486-13)

Remote controller assy (A70-2025-05) : KDC-MPV619 : KDC-MPV7019

Remote controller assy (A70-2026-05) : KDC-MPV7020

DC cord (E30-4940-05) : KDC-MPV619 : KDC-MPV7019 : KDC-MPV7020

DC cord (E30-4958-05) : KDC-MV6521

Front glass (B10-4168-01)

Panel assy (A64-2590-02)

KDC-MPV619

Front glass (B10-4174-01)

Panel assy (A64-2596-02)

KDC-MPV7020

Front glass (B10-4169-01)

Panel assy (A64-2591-02)

KDC-MPV7019

Front glass (B10-4178-01)

Panel assy (A64-2600-02)

KDC-MV6521

CD RECEIVER

KDC-MPV619/MPV7019 KDC-MPV7020/MV6521

SERVICE MANUAL

• This service manual does not include information on the CD mechanism assembly (exploded view, parts list, schematic diagram or mechanism operation description). For such information, please refer to the CD mechanism assembly service manual (X92-4460-0x : B51-7891-00).

KDC-MPV619/MPV7019/MPV7020/MV6521

BLOCK DIAGRAM

CD MECHA

F/E

FM+B

PLL+B

AM+B

BUFF

E-VOL

SYSTEM MI-COM

DECODER

RDS

MP3 NORMAL

ANALOG ANALOG

AUX/CH SW

AUX

WIRED OEM DISP

RST IC

DET

FLIP

LCD (POSI)

MATRIX

KEY

G/R SW

RST SW

REMO ON

BACKLIGHT

LCD V-ILL

DRIVER

LCD

REMO

D/A CONVERTER

GUIDE ILL SW

OPEN

OUT

REMO/

BU5VSW5V

SERVO +B

PANEL

2WAY MUTE

ACC DET

DIMMER

TEL-MUTE

ACC

DIMMER

POWER IC

SP OUT

MUTE

PRE OUT (FRONT) PRE OUT (REAR)

MUTE

PRE OUT (NF/REAR)

MUTE

DRIVER

OP AMP

SWITCHED

PROTECTION

THERMAL

NOISE BUFFER

BU DET

SW14V

A8V

CD MACHA+B

ILLUMI

(for MP3)

EJECT ILL/DSI (SW AND LED)

EJECT KEY

X89-252

X89-251

BACK UP

ANT-CON

P-CON

Q45,47 Q46,48

IC7

(E) TYPE

IC1

& N.C. MPX

IC2

Q52

(E) TYPE

Q9,10

IC9IC10

(M) TYPE

(K,E) TYPE

IC8

Q54 S1

AVR

LCD

ED1

Q50-64

Q3,4

IC2

IC3

IC1

Q16,17

Q18

Q14,15

IC11,Q51

Q19-22

Q33

Q34

Q26

Q13 Q11,12

Q55

Q28,31

Q27,29,30,32

(E) TYPE

P-CON ANT-CON

(K,M) TYPE

(E) TYPE

IC6

Q43

Q7,8

IC4

Q5,6

Q1-4

IC3,

DATA C

CH-CON

DATA H

REQ H

RST CLK

REQ C

CD MECHA+B

SERVO+B

PLL DATA

PLL CLK

M STOP

M RST

SW4

MUTE R

MUTE L

LO/EJ

MOSW

SW2 SW3

SW1

S-METER

IFC OUT

SW5V

PANEL DET

GUIDE ILL

MP IN

AFS

LEVEL

RDDA

A 8V

(for MP3) BU5V

A8V

2 3

SW5V

SDA SCL

AUDIO OUT

A8V

BACK UP

O-CLK O- DATA

O-CE

REMO

RESET

BU5V

MUTE DRIVER

PANEL5V

RGB

CONTROL

AM+B

FM+B

S-METER

RDCK

RQUAL

BU5V

FLIP DET

L DATAS

L CE

L CLK

L DATAL

L-INH

V-ILL DATA

V-ILL CLK

EJECT

EJECT ILLUMI/DSI

ILL ON

CD MECHA+B

SW5V

(E) TYPE(K,M) TYPE

CD (MP3,NORMAL)

3600mVCHANGER 3600mV

3600mV 1800mV

600mV

FM AM

1372mV

855mV

3600mV

2 2

BU5V

QUAL

S MUTE

REAR L/R

FRONT L/R

AFS

NOISE

N/F SW

PRE MUTE

N/F MUTE

P MUTE

MUTE

BEEP

BU5V

MUTE DRIVER

P-ON

PANEL5V

SW5V

AUX SW

CH-AUX

MODE

PRE OUT OUTPUT VOLTAGE

DIMMER

PHONE

ACC DET

BU DET

251mV (E)

470mV (K,M)

230mV

1200mV

(MP3,NORMAL)

1200mV

KDC-MPV619/MPV7019/MPV7020/MV6521

● SWITCH UNIT (X16-1620-10/X16-1652-70)

COMPONENTS DESCRIPTION

Ref.No.

Component Name Application/Function Operation/Condition/Compatibility

IC1 LC75808W LCD driver with key matrix IC2 RS-171 Remote control sensor IC IC3 M62333FP D/A converter The brightness control of red, green and blue colour

DTA114EUA or KRA302

Key permission SW For the key scanning start and the key detection SW Q3 2SD2114K Key illumination red SW When a base goes Hi, RED LEDs are turned on. Q4 2SD2114K Key illumination green SW When a base goes Hi, GREEN LEDs are turned on. Q5 2SC4081 VLCD AVR For LCD driver IC

DTA114EUA or KRA302

5V SW

While a base goes Lo, PAN 5V is supplied to the remote

control sensor IC and D/A converter IC. Q50 2SC4081 V-I converter Current driver for blue LED Q51 2SC4081 V-I converter Current driver for green LED Q52 2SC4081 V-I converter Current driver for red LED Q53 2SC4081 V-I converter Current driver for blue LED Q54 2SC4081 V-I converter Current driver for green LED Q55 2SC4081 V-I converter Current driver for red LED Q56 2SC4081 V-I converter Current driver for blue LED Q57 2SC4081 V-I converter Current driver for green LED Q58 2SC4081 V-I converter Current driver for red LED Q59 2SC4081 V-I converter Current driver for blue LED Q60 2SC4081 V-I converter Current driver for green LED Q61 2SC4081 V-I converter Current driver for red LED Q62 2SC4081 Buffer Control voltage buffer for red LEDs brightness Q63 2SC4081 Buffer Control voltage buffer for green LEDs brightness Q64 2SC4081 Buffer Control voltage buffer for blue LEDs brightness

UPD703030GFA03

IC1 or UPD703033GFA05 System MI-COM.

or UPD703033GFA13

IC2 TDA7407D E.VOL & N.C.MPX IC

IC3

HD74HC02FP

Mute logic 2-input NOR x 4

or TC74HC02AF IC4 TA8273H Power IC IC6 NJM2123V-TE2 Switched Op. Amp. IC7 SAA6581T RDS decoder IC8 S-80837ANNP Reset IC When BU 5V voltage is less than 3.7V, IC outputs Lo.

IC9 TC4066BF(N) AUX input SW

When 5 pin, 12 pin and 13 pin terminals go Hi, AUX's inputs are selected.

IC10 TC4066BF(N) Changer input SW

When 5 pin, 12 pin and 13 pin terminals go Hi, Changer's inputs are selected.

IC11 SI-8050JD CD+5V AVR DC/DC converter

Q1 DTC143TUA Audio mute SW When a base goes Hi, Front R Ch. pre-out is muted. Q2 DTC143TUA Audio mute SW When a base goes Hi, Front L Ch. pre-out is muted. Q3 DTC143TUA Audio mute SW When a base goes Hi, Rear R Ch. pre-out is muted. Q4 DTC143TUA Audio mute SW When a base goes Hi, Rear L Ch. pre-out is muted. Q5 2SD2114K Audio mute SW When a base goes Hi, NON-F R Ch. pre-out is muted. Q6 2SD2114K Audio mute SW When a base goes Hi, NON-F L Ch. pre-out is muted.

● ELECTRIC UNIT (X25-9190-XX/X25-9202-70)

Ref.No.

Component Name Application/Function Operation/Condition/Compatibility

KDC-MPV619/MPV7019/MPV7020/MV6521

COMPONENTS DESCRIPTION

Ref.No.

Component Name Application/Function Operation/Condition/Compatibility

DTA124EUA or KRA303

Mute driver for pre-out mute SW

When a base goes Lo, Q7 is turned on for driving NON-F mute SW.

DTA124EUA or KRA303

Mute driver for pre-out mute SW

When a base goes Lo, Q8 is turned on for driving Front and Rear mute SW.

DTC144EUA or UN5213

AUX/Changer selection SW

AUX selected : (Q9,Q10)=(ON,ON)

Q10

DTA124EUA or KRA303

Changer selected : (Q9,Q10)=(OFF,OFF)

Q11 2SC4081 or 2SD1819A

BU 5V AVR

While BACKUP is applied, BU 5V AVR outputs +5V.

Q12 2SA2057 Q11 and Q12 are inverted Darlington connection.

Q13

2SA1576A or 2SB1218A

SW 5V

While a base goes Lo, SW 5V is supplied to the microprocessor peripheral circuits.

Q14 2SC4081 or 2SD1819A

When Q14's base goes Hi, Q15 is turned on, and A.+8V AVR

A.+8V AVR outputs +8.3V.

Q15 2SA2057

Q14 and Q15 are inverted Darlington connection.

Q16

DTC124EUA or UN5212

A.+8V AVR and SERVO +B AVR ON/OFF control

Q17

DTA124EUA or KRA303

SW14V While Q16's base goes Hi, Q17 is turned on, and A.+8V AVR

and SERVO +B AVR are working.

Q18 2SD2375 SERVO +B AVR When Q18's base goes Hi, SERVO +B AVR outputs +7.6V. Q19

DTC124EUA or UN5212

ILL +B AVR ON/OFF control

Q20

DTA124EUA or KRA303

ILL +B AVR SW While Q19's base goes Hi, Q20 is turned on, and ILL +B AVR

is working.

Q21 2SB1184

While Q22's base goes Hi, Q21 is turned on, and AVR

Q22 2SC4081 or 2SD1819A

ILL +B AVR outputs +10.7V.

Q21 and Q22 are inverted Darlington connection.

Q26

DTC144EUA or UN5213

Small lamp detection SW

When vehicle small lamps turn on, Q26's base goes Hi, and Q26 is turned on .

Q27

DTC114YUA or UN5214

P-CON SW

When Q27's base goes Hi, Q32 is turned on .

Q32

2SB1277(Q,R) or 2SB1434

Works during POWER ON mode.

Q29

DTA124EUA or KRA303

P-CON. protection inhibit SW Prevents Q30 tuning ON during start-up after power ON.

Q30

2SA1576A or 2SB1218A

P-CON. protection SW Protect Q32 by turning ON when P-CON output is grounded.

Q28

DTC114YUA or UN5214

P-ANT SW

When Q28's base goes Hi, Q31 is turned on.

Q31

2SB1277(Q,R) or 2SB1434

Works during FM/AM reception mode or RDS reception mode. While BACKUP is applied, a base goes Hi, and Q33 is turned on.

Q33 2SC4081 or 2SD1819A BU detection SW

When momentary power down has detected, a base goes Lo, and Q33 is turned off.

Q34 2SC4081 or 2SD1819A ACC detection SW While ACC is applied, a base goes Hi, and Q34 is turned on.

Q42

DTC124EUA or UN5212

E. VOL. mute SW

When BU detection SW or MI-COM.'s mute is working, a base goes Hi, and Q42 is turned on.

Q43 DTC143TUA Noise buffer Q45

DTC124EUA or UN5212

When Q45's base goes Hi, Q47 is turned on, and A.+8V is

Q47

2SB1277(Q,R) or 2SB1434

FM+B SW supplied to the F/E. Works during FM reception mode or RDS

reception mode.

Q46

DTC124EUA or UN5212

AM+B SW

When Q46's base goes Hi, Q48 is turned on, and A.+8V is

Q48

2SB1277(Q,R) or 2SB1434

supplied to the F/E. Works during AM reception mode. Q51 2SC4081 or 2SD1819A CD+5V AVR SW When a base goes Hi, CD+5V AVR is working. Q52 DTC143TUA Composite signal buffer Q53

DTA114YUA or UN5114

EJECT illumination/DSI SW When a base goes Lo, Q53 is turned on.

Q54

DTA114YUA or UN5114

Guide illumination SW When a base goes Lo, Q54 is turned on.

Q55

2SA1576A or 2SB1218A

Panel 5V SW When a base goes Lo, Q55 is turned on.

KDC-MPV619/MPV7019/MPV7020/MV6521

MICROCOMPUTER'S TERMINAL DESCRIPTION

● IC1 (ELECTRIC UNIT : X25-9190-XX/X25-9202-70)

Pin No.

Pin name I/O Description Processing Operation

1 L-DATAS O Data line to LCD driver 2 L-CLK O Clock output to LCD driver 3 PLL-DATA I/O Data input/output terminal with F/E 4 PLL-CLK I/O Clock output to F/E 5 AM+B I/O AM+B control Hi: During AM reception

6 FM+B I/O FM+B control

Hi: During FM reception,

Hi: During FM reception if with RDS, RDBS 7 CH-CON O Changer control output Lo: Standby mode, Hi: Operation mode 8 CH-RST O Reset output to changers : Reset 9 EVDD - Positive power supply connection terminal Connected to BU 5V lines.

10 EVSS - Ground connection terminal Connected to GND lines. 11 AFS O

Noise detection time constant switching terminal

Hi: During FM reception, Lo: During FM seek or AF search

12 BEEP O BEEP sound output 13 REMO I

Data input from the remote control light sensor or wired remote control

14 AUX SW I/O CH/AUX inputs selector terminal

Hi: AUX inputs, Lo: CH inputs

Lo: No AUX inputs model

Hi: Rear/N-F pre-outs are selected to Front output.

15 N/F SW O N-F selector terminal Lo: Rear/N-F pre-outs are selected to Rear output.

Lo: No Rear/N-F pre-outs model

16 IC2-SDA I/O Data line with IC2,CD mechanism MI-COM. 17 IC2-SCL I/O Clock line with IC2,CD mechanism MI-COM.

18 PRE-MUTE I/O Pre-out mute control terminal

Lo: When momentary power down detected,

when M-MUTE input is Lo.

Lo: When momentary power down detected, N-F pre-

19 N/F-MUTE O N-F pre-out mute control terminal

outputs selecting or OFF, when M-MUTE inputs is Lo.

Lo: No Rear/N-F pre-outputs model

20 DIMMER-CON O Dimmer control output Not used (N.C.) 21 TEST - Test terminal Not used (Connected to GND lines) 22 SVR O Power IC SVR control output Not used (N.C.) 23 P-MUTE O Power IC mute output

Lo: ALL OFF model, POWER OFF mode, TEL MUTE on

24 P-STBY O Power IC STBY control output Hi: Power IC on, ALL OFF mode, Lo: Power IC off 25 MUTE O Mute control output Lo: Mute off, Open: Mute on 26 SW5V I/O SW5V control terminal Lo: SW5V on, Hi-Z: SW5V off

27 BU DET I Momentary power down detection input

Hi: When momentary power down detected or BU OFF

Lo: BU ON

28 ACC DET I ACC detection terminal Hi: ACC OFF, Lo: ACC ON 29 N.C O Not used (N.C.) 30 DIMMER I Small lights detection input Lo: During vehicle small lamps turn on. 31 N.C O Not used (N.C.)

32 P-CON I/O Power control output

Hi-Z: POWER OFF mode, ALL OFF mode,

Hi: POWER ON mode

33 ANT-CON O Antenna control output

Hi: During TUNER mode, TI reception mode, last FM mode

34 RESET I Reset input terminal Lo: System reset 35 XT1 I Sub clock resonator connection terminal Clock count during POWER OFF mode 36 XT2 - Sub clock resonator connection terminal

37 REGC -

Capacitor connection terminal for regulator inside microprocessor

38 X2 - Main clock resonator connection terminal

Oscillation: POWER ON mode, Oscillation stop:

POWER OFF mode or momentary power down detected

39 X1 I Main clock resonator connection terminal 40 VSS - Ground connection terminal Connected to GND lines. 41 VDD - Positive power supply connection terminal Connected to BU 5V lines. 42 CLKOUT O Internal system clock output Not used (N.C.) 43 CD MECH +B I/O

MP3 CD mechanism power supply control output

Lo: Power supply on, Hi-Z: Power supply off

44 P-ON I/O SW14V control terminal Lo: POWER OFF mode, Hi: POWER ON mode 45 O-DATA I/O Data line with the external display device Lo: The model without the external display device 46 O-CLK I/O Clock line with the external display device Lo: The model without the external display device 47 O-CE I/O CE line with the external display device Lo: The model without the external display device

KDC-MPV619/MPV7019/MPV7020/MV6521

MICROCOMPUTER'S TERMINAL DESCRIPTION

Pin No.

Pin name I/O Description Processing Operation

48 N.C O Not used (N.C.) 49 TYPE0 I Destination type selection terminal 0 50 TYPE1 I Destination type selection terminal 1 51 TYPE2 I Destination type selection terminal 2 52 IC2 TYPE0 I IC2 setting terminal Lo: Initial value 53 IC2 TYPE1 I IC2 setting terminal Lo: Initial value 54 PANEL DET I Panel detaching detection input Lo: Panel attached, Hi: Panel detached

Lo: Illumination on, Hi-Z: Illumination off

55 GUIDE ILL O Guide illumination control output Lights-on: Panel tilted

Lights-out: Panel detached

56 M-MUTE L I

Mute request (L Ch.) from CD MECHA. MI-COM.

Lo: Mute request

57 M-MUTE R I

Mute request (R Ch.) from CD MECHA. MI-COM.

Lo: Mute request 58 BVDD - Positive power supply connection terminal Connected to BU 5V lines. 59 BVSS - Ground connection terminal Connected to GND lines. 60 M RST O Reset output to CD mechanism MI-COM. Lo: Reset 61 M STOP O Stop request to CD mechanism MI-COM. Lo: Stop mode, Hi: Operation mode 62 N.C O Not used (N.C.) 63 CD SW3 I CD down SW detection input Hi: Chucking 64 LO/EJ I/O

CD mechanism loading/Eject switching output

Hi: Eject, Lo: Loading, Hi-Z: Stop or Break 65 MOSW O CD mechanism loading motor control output Hi: CD loading/eject action or Break, Lo: other

66 V-ILL CLK I/O

Clock line with the D/A converter for Lo: Panel detached, When momentary power down variable illumination detected

67 L INH O INH output to LCD driver IC

Lo: When momentary power down detected or Reset 68 V-ILL DATA I/O

Data line with the D/A converter for

variable illumination 69 L CE O CE output to LCD driver IC 70 PANEL 5V I/O Panel 5V control terminal Lo: 5V on, Hi-Z: 5V off 71 ILL ON I/O ILL+B control terminal Hi: ILL+B on, Hi-Z: ILL+B off

Lo: Illumination on, Hi-Z: Illumination off

72 EJECT ILL/DSI I/O Eject key illumination control terminal

Lights-on at the panel tilted during POWER ON mode Flashing at the panel detached during POWER ON mode

73 AVCONT O

A/D converter reference voltage control output

Hi: Active, Connected to AVREF terminal 74 AVDD - Positive power supply connection terminal Connected to BU 5V lines. 75 AVSS - Ground connection terminal Connected to GND lines. 76 AVREF I

A/D converter reference voltage input terminal

77 PHONE I PHONE detection input

1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE 78 E2PROM DET I EEPROM detection input Lo: No EEPROM, Hi: EEPROM 79 N.C I Not used (pull down to GND lines) 80 N.C I Not used (pull down to GND lines)

81 FLIP DET I

Panel connector removing and installing Lo: Panel attached normally,

detection input Hi: Panel detached or tilted 82 N.C I Not used (pull down to GND lines) 83 NOISE I FM noise detection input 84 S-METER I S-meter input from F/E 85 R-DATA I Data input from the RDS decoder IC

Except RDS, RBDS model: Not used (pull down to GND lines)

86 R-QUAL I Quality input from the RDS decoder IC

Except RDS, RBDS model: Not used (pull down to GND lines) 87 IFC-OUT I F/E IFC OUT input terminal Hi: Station detected (Vth=2.5V) 88 CH-MUTE I Mute request from changers Hi: Mute request 89 CH-REQH O Request output to changers Lo: Request 90 R-CLK I Clock input from the RDS decoder IC

Except RDS, RBDS model: Not used (pull down to GND lines) 91 CH-REQC I Request input from changers Lo: Request 92 KEY-REQ I Communication request from LCD driver IC 93 CD SW1 I Loading SW detection input Lo: Loading start 94 CD SW2 I 12cm disc detection SW input Lo: 12cm disc detected 95 EJECT I Eject key detection input Lo: Eject key on 96 CD SW4 I 8cm disc detection SW input Not used (N.C.) 97 CH-DATAC I Data input from changers 98 CH-DATAH O Data output to changers 99 CH-CLK I/O Clock input/output with changers

100 L DATAL I Data input from the LCD driver IC

KDC-MPV619/MPV7019/MPV7020/MV6521

TEST MODE

1. How to enter the test mode

While holding the Preset 1 and Preset 3 keys, reset the unit.

2. How to exit from the test mode

Reset the unit, ACC OFF, power OFF and Panel detached. (Note) The test mode cannot be terminated by

momentary power down.

3. Initial status in the test mode

• Sources : ALL OFF

• Display : All segments are lit.

• Volume : -10dB (displayed as "30")

• Loudness : OFF

• CRSC : OFF regardless of the presence of switching function.

• SYSTEM Q : Flat

• BEEP : When pressing any keys, the buzzer generates a beep at any time.

4. Special display in Tuner mode

When any of the following messages is displayed in Tuner mode, the F/E may be abnormal.

• "TNE2P NG" : The EEPROM is set to the default (unstable values) because the F/E was shipped without passing through the adjustment process, etc.

• "TNCON NG" : Communication with the F/E is not possible.

5. Forced switching of K3I

Each press of the Preset 6 key in Tuner mode should switch K3I from AUTO → Forced Wide → Forced Middle → Forced Narrow → AUTO. The initial status is AUTO and the display shows these modes as follows.

• AUTO : FMA

• Forced Wide : FMW

• Forced Middle : FMM

• Forced Narrow : FMN

6. Test mode specifications of the CD receiver

• Forced ejection is inhibited in the reset start operation. When the unit is reset while a CD is loaded in it, the CD is not recognized by resetting.

• Each press of the Track Up key jumps to the following track numbers:

No. 9 → No. 15 → No. 10 → No. 11 → No. 12 → No. 13 → No. 14 → No. 9 (The cycle restarts from here.)

• Each press of the Track Down key jumps to the previous track number to the track being played.

• When the number of total trucks of the MP3 disc is less than 9, 1st truck is played.

7. Audio-related specifications

• A short press of the Q key initiates the audio adjustment mode.

• Pressing the ∗ key on the remote initiates the audio adjustment mode.

• Fader is selected to the initial item.

• Continuous holding of a remote control key is inhibited.

• Bass, Middle and Treble are adjusted in 3 steps of Min / Center / Max with the Track Up/Down keys.

• Balance is adjusted in 3 steps of Left Max / Center / Right Max with the Track Up/Down keys.

• Fader is adjusted in 3 steps of Rear Max / Center / Front Max with the Track Up/Down keys.

8. Menu-related specifications

• A short press of the MENU key initiates the Menu

mode.

• Pressing the DNPP/SBF key on the remote initiates the Menu mode.

• Continuous holding of a remote control key is inhibited.

9. Backup current measurement

When the unit is reset while ACC is OFF (i.e. by turning Backup ON), the MUTE terminal goes OFF in 2 seconds in place of 15 second. (The CD mechanism is not activated at this time.)

10. Special display when the display is all on

Pressing the Preset keys while the power is ALL OFF displays the following information.

• Security-related information

1. Forced Power ON mode (All models)

Even when the security (Mask key) is approved, resetting the unit while holding the ATT and Preset 4 keys makes it possible to turn the power ON for 30 minutes. After 30 minutes have elapsed, it is not possible to return to the previous condition unless the unit is reset again.

2. Method of registration of the security code after EEPROM (Tuner Unit Ass'y) replacement (Code security model)

1. Enter the test mode. (See 1. How to enter the test

mode)

2. Press the MENU key to enter the Menu mode.

Version display (8 digits, Month/Day/Hour/Minute) (Display) xxxxxxxx : System microcomputer Short press : View power ON time. (The All OFF period is not counted.) Long press/hold : Clear power ON time at the power ON time displaying. (Display) PON xxxxx Max. 65535 (hours)

Short press : Display CD operation time. Long press/hold : Clear CD operation time at the CD operation

time displaying.

(Display) CDT xxxxx Max. 65535 (hours)

Short press : Display CD ejection count. Long press/hold : Clear CD ejection count at the CD ejection

count displaying.

(Display) EJC xxxxx Max. 65535 (times)

Short press : Display Panel open/close count. Long press/hold : Clear Panel open/close count at the Panel

open/close count.

(Display) PC xxxxxx Max. 655350 (times)

[PRESET 1]

[PRESET 3]

[PRESET 4]

[PRESET 5]

[PRESET 6]

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