Kenwood DPX-6020 Service manual

CD CASSETTE DSP RECEIVER

DPX-6020

SERVICE MANUAL

Refer to the service manual D40-1132-05 (B51-7505-00) for CASSETTE MECHANISM ASSY’s information.

Knob (CDEJ) (K24-3778-03)

EJECT

COMPACT

DIGITAL AUDIO

TEXT

ATT

NAME

DISP

Panel assy (A64-2427-21) : M (A64-2468-21) : K

CRSC

VOLUME

PWR

OFF

SRC

Knob (SRC) (K24-3777-03)

DIGITAL DIRECT

OFF

AUD SBF

DSP EQ FNC

Badge (B43-1284-04)

CD CASSETTE DSP RECEIVER

DBB/SFC

USER PRESET

SCRL/B NR SCN RDM/BS REP M.RDM/MTLD.SCN

1 2 3 4 5 6

COMP

KBS

SFC LEVEL

Front glass (B10-4088-11)

Knob (CAEJ) (K24-3779-03)

DOLBY B NR

CASSETTE

EJECT

ANGLE

RTN

DISC

ANGLE

POSI

R.SIZE

Bracket assy (J19-5121-04) : K

Escutcheon assy (B07-3046-04)

Escutcheon assy (B07-3047-04) : K

Screw set (N99-1701-05) : M (N99-1711-05) : K

DC cord (E30-4886-05)

Remote controller assy (A70-0900-05)

SYSTEM u-COM M30622MC-A65FP

VOL

BASS

INPUT SEL

ISO

NC. MPX

PWR AMP

FRONT SP OUT

REAR SP OUT

MUTE

TDA7386

PRE OUT

FRONT

E VOL, TONE, NC, MPX TDA7407

TRE

MD/CD CHANGER

DSP CXD2726Q

VFD

PANEL u-COM

CD PACK

MATRIX

VOL

SOFT MUTE

M30805MG-214GP

AMP-CTRL

ANT CON

SUB MOTOR DRIVER

HA12216F

F/E

ANT.

PLAY HEAD

MODE

PACK DET

STBY

PACK IN

TAKEUP REEL SUPPLY REEL

REELT REELS

RST SW

SMALL DET

ACC DET

BU DET

DSP3.3V

FM8V SW

AM8V SW

P CON

5V SW

A8V AVR

D5V AVR

SRV +B AVR

DC/DC +B SW

DC/DC

DRIVER

MOTOR

MAIN

E2PROM

S-24C01AFJA

REAR PRE OUT

BUFF

LEVEL

MUTE

DOWN

BUFF

LPF

LPF BUFF

HPF

MUX

VOL

AMP

SW 14V

DSP3.3V AVR

ILL +B AVR

PANEL MOTOR DRIVER

IC7

IC8

IC5

TDA7435

IC3

IC18

KEY

5V SW

REMOCON

3.3V AVR

IC15

IC1

IC2 IC12

AVR

IC1

IC2

ED2

IC4

IC5

IC17

SDA

SCL

RESET

FSD FM SD

PWIC SVR

PWIC STBY

TEST

MUTE

FM DET OUT

DATA

FM SD

FSD

CLK

AM ANT

FM ANT

AUD +B FM +B AM +B

PON 5V

SW1-3

MRST

MOTOR

ANT CON

P CON

SMALL

ACC

B. U

GND

BU DET

ACC DET

SMALL

BU 5V

+6dB

(+2.4-3dB)

DSP 5V

BU 5V

FM +B

AM +B

MOTOR -

B. U

B.U

BU 5V

AUD +B

SDA

SCL

PON 5V

BEEP

DSP WRQ

DSP PD

DSP RST

-0.5dB

AUDIO OUT

AMP-CTRL

MOTOR +B

CD SRV +B

DSP(A) 3.3V

AUDIO +B

BEEP

STBY

TEST SVR

SCL

SDA

FRONT

REAR

TAPE +15dB

ANT CON

BU 5V

SC-CON

SC DATA

RTS

AMUTE

LO/EJ

MSTOP

F-IN(L) VREF(L) R-IN(L) F-IN(R)

R-IN(R)

SUB

MAIN

REV RchRch

FWD

Lch

REV

Lch

FWD

A OUT

LB1641

TAPE FM

CD CH

SRV +B

BU 5V AUD +B

MOTOR +B

DSP SO

DSP CLK

DSP WRDY

P ON

BU DET

ACC DET

SMALL

ANT CON

P CON

ILLUMI

FL PON

CTS

MC DATA

PACK DET

MAIN

R REEL

F REEL

SUB-

SUB+

MODE 1-3

EQ-MUTE

MSC

MUSIC

FWD/REV

MTL

DOLBY

SW1-3 AMUTE

MSTOP

MRST LO/EJ

MOTOR

+11dB

OTHER

2SB1188

PON 5V

BU 5V

REQH

CHCLK

DATAC

REQC

DATAH

CHCON

2SB

AM DET OUT

REQ

PLL REQ

PLL CE

PLL DATA

PLL CLK

PW MUTE

DSP PD

DSP WRQ

DSP RST

DSP CLK

DSP SO

DSP WRDY

-12.4dB

-0.5dB

9dB

TAPE +15dB OTHER +11dB

SCL

SDA

P CON

P ON

P ON2

DSP(D) 3.3V

ILLUMI

ILL +B

MOTOR +

FRONT

REAR

N/F

AUD +B

2SB1188

L4943

UPC

BA5219

2SB123YK

2SB1548(P)

2SB1448(Q,R)

VREF(R)

+B FAC

ILL +B

SW 5V

PON 5V

+2dB +0dB

+4dB +4dB:

REFCON

P-MODE

PM DET

OPEN SW

P-MODE

REFCON

PM DET

OPEN SW

LED LOGO

LED CD

CD PACK

LED TAPE

MOTOR + MOTOR -

SWITCH UNIT

(X25-9100-20)

DOLBY UNIT (X30-3000-00)

CASSET MECHA

CD MECHA

(X16-1400-20)

SUB PANEL UNIT

MECHA

PANEL

LED DRIVER

300mV 160mV

400mV

1200mV

AM : 160mV

FM : 400mV

537mV

1687mV

1593mV

3193mV

59mV

100mV 169mV

319mV

1503mV 1592mV 507mV

3014mV

108mV

342mV

58mV

180mV 192mV 61mV

114mV

363mV

CD CH TAPE FM AM

1511mV 475mV 798mV 254mV

TAPE

CD CH

FM :

: :

CD CH

TAPE

: :

TAPE FM AM

: :

CD CH :

CD CH TAPE FM AM

: :

:AM

CD CH FM

TAPE

: : :

CD CH

TAPE

: :

TAPE FM AM

: :

283mV 475mV 151mV

CD CH : 900mV

1200mV 300mV

CD TAPE

: :

DPX-6020

BLOCK DIAGRAM

DP X-6020

COMPONENTS DESCRIPTION

Synthesizer Unit (X14-6770-XX)

Ref. Parts No. Name Function

IC1 M30622MC-A65FP System µ-COM IC2 TDA7407 E-VOL, HPF, LPF, INV VOL, LOUD, TONE, BAL, FAD, FM NC, MPX IC3 L4943 Power Source IC Digital : 5V, Audio : 8V, Tuner : 8V AVR, P-CON IC5 TDA7435 System E’S IC7 NJM4565MD Buffer IC IC8 CXD2726Q-1 DSP IC IC9 NJM4565MD LPF Filter IC10 NJM4565MD LPF Filter IC11 NJM4565MD LPF Filter IC12 TDA7386 Power Amp IC13 NJM4580MD Buffer IC IC14 PST9142NR E2PROM IC15 S-24C01AFJA RESET IC IC16 TC7W32FU For MUTE IC17 BA5219BFP-Y Panel mechanism dr ive IC IC18 UPC29L33T 3.3V Regulator Q1 DTC144EUA Surge detection Surge detection voltage (18.2~18.9V) turns this component on. Q2 2SC4081 BU voltage detection B.U detection voltage (8.8~9.1V) turns this component on. Q3 2SC2412K ACC voltage detection ACC detection voltage (8.2~8.5V) turns this component on. Q5 DTC144EUA ILLUMI detection When small is turned on, this component is turned on. Q6 DTA123JK AMP CTRL SW Q9 2SB1188(R) ANT CON SW When turned on, ANT CON is output. Q10 2SC4081(S) ANT CON SW When turned on, Q9 is turned on. Q11 2SC4081 P-CON Short DET Q12 DTB123YK P-ON 5V SW When turned on, P-ON 5V is turned on. Q13 DTC124EUA P-ON 5V SW When turned on, Q12 is turned on. Q14 DTC114EUA SERVO 7.5V SW When turned on, Q15 is turned on. Q15 DTA114EUA SERVO 7.5V SW When turned on, Q17 is turned on. Q16 2SB1548(P) SERVO 7.5V AVR When turned on, 7.5V is output. Q17 2SC4081 SERVO 7.5V AVR When turned on, Q16 is turned on. Q22 DTC124EUA ILL+B SW When turned on, Q23 is turned on. Q23 DTA124EUA ILL+B SW When turned on, Q25 is turned on. Q24 2SB1548(P) ILL+B AVR When turned on, ILLMI 10.5V AVR ON Q25 2SC4081 ILL+B AVR When turned on, Q24 is turned on. Q26 DTC114EUA SW14V SW When turned on, Q27 is turned on. Q27 DTA114EUA SW14V SW When turned on, Q29 is turned on. Q28 2SB1416(Q,R) SW14V AVR When turned on, SW14V AVR ON Q29 2SC4081(S) SW14V AVR When turned on, Q28 is turned on. Q32 DTC124EK AM+B SW When turned on, Q33 is turned on. Q33 CPH3105 AM+B SW When turned on, AM +B is output. Q34 DTC124EUA FM+B SW When turned on, Q35 is turned on. Q35 CPH3105 FM+B SW When turned on, FM +B is output.

DPX -6020

COMPONENTS DESCRIPTION / MICROCOMPUTER’S TERMINAL DESCRIPTION

Ref. Parts No. Name Function

Q36 DTC144EUA Panel detection Panel voltage detection Q37 DTA144EUA CH1→2 switching When turned on, A8V is output. Q38 DTC144EUA CH1→2 switching When turned on, Q37 is turned on. Q41 2SD2114K MUTE SW When turned on, output of IC7 is muted. Q42 2SD2114K MUTE SW When turned on, output of IC7 is muted. Q44 DTC143TUA PREOUT MUTE When turned on, PREOUT MUTE (Rear Rch) Q45 DTC143TUA PREOUT MUTE When turned on, PREOUT MUTE (Rear Lch) Q46 DTC143TUA PREOUT MUTE When turned on,PREOUT MUTE (Front Rch) Q47 DTC143TUA PREOUT MUTE When turned on,PREOUT MUTE (Front Lch) Q48 DTC124EUA PW IC MUTE When turned on, PW IC MUTE Q49 DTC144EK PW IC protection Q50 DTC114YUA SVR Discharge SW From STBY OFF, on within 5 seconds. Q51 DTA124EUA RESET detection SW When tur ned on, Q52 is turned on. Q52 DTC114YK RESET detection SW When turned on, RESET Q53 FMC2A Switch for LOGO LED When turned on, LOGO LED lights up. Q54 FMC2A Switch for CD LED When turned on, CD LED lights up. Q55 FMC2A Switch for TAPE LED When turned on, TAPE LED lights up. Q59 DTA114EUA MUTE detection When turned on, MUTE Q60 DTC124EUA MUTE detection At MUTE detection, Q59 is turned on

(X14-)IC1:System µ-com

Pin Pin Name I/O Description Processing Operation

1 DSP RVDT O DSP data output 2 DSP_CLK O DSP clock output 3 CHCON1 O External CH1 selection H: CH1, L: Others 4 CHCON2 O External CH2 selection H: CH2, L: Others 5 DATAH O External CH data output 6 DATAC I External CH data input 7 CHCLK I/O External CH clock input/output 8 BYTE I External data bus width switching

9 CNVss I Processor mode switching 10 DSP_REDY I DSP write request 11 DSP_RST O DSP Reset 12 Reset I Reset input L: Reset 13 Xout O Main system clock output 14 Vss I Power input 15 Xin I Main system clock input 16 Vcc I Power input 17 NC I Not in use 18 SP INT I Spectrum analyzer reception permission 19 BU DET I B.U detection H: Power down

DP X-6020

MICROCOMPUTER’S TERMINAL DESCRIPTION

(X14-)IC1:System µ-com

Pin Pin Name I/O Description Processing Operation

20 REQC I External CH reception request 21 REQH O External CH transmission request H: On 22 PANT O Power antennal control H: On 23 PCON O External amp power control H: On 24 PON O Power control H: On 25 LAMP O Lamp control H: On 26 AMP_CTRL O External amp control H: On 27 ACC DET I A CC detection H: ACC off 28 BUZZ O Beep ouput 29 SCL O IC2 clock ouput 30 SDA I/O IC2 data input/output 31 PN MC DATA * O Panel µ-com communication data output 32 PN SC DATA I Panel µ-com communication data input 33 PN RTS O P anel µ-com communication control 34 PN CTS I Panel µ-com communication control 35 PMOT1 O Panel motor control 36 PMOT2 O Panel motor control 37 REFCON O A/D ref erence voltage output 38 PMDET I Panel mechanism detection 39 OPEN SW I Panel full-open detection L: Panel full-open 40 PM VR O Panel mechanism voltage congrol H: 5.1V, L: 7.2V 41 PN SCCON O Panel µ-com communication control line 42 MUTE O MUTE H: MUTE on 43 LED CD O LED CD display H: On 44 LED TAPE O LED T APE display H: On 45 LED LOGO O LED LOGO display H: On 46 SP_REQ O SPANA data output request to panel microcomputer 47 CD_SW3 I CD mechanism SW3 detection 48 CD MOTOR O CD loading motor control H: On 49 CD_LO/EJ I/O Loading/Eject control L: Loading direction

50 CD_MSTOP O CD mecha controller stop L: Stop 51 CD_MRST O CD mecha controller reset L: Reset 52 CD_AMUTE I CD mute request H: Mute request 53 CD_SW1 I CD mecha SW1 detection 54 CD_SW2 I CD mecha SW2 detection 55 TA DOLBY O Dolby selection SW H: DOLBY on 56 TA MTL O Metal selection SW H: Metal, L: Normal 57 TA_F/R O Play direction selection SW H: RWD, L: FWD 58 TA MUSIC I Between-music detection input SW L: Music 59 TP MSC O Casettee between-music selection SW L: FF&REV 60 TA EQ MUTE O EQ music selection SW H: MUTE on

H: Panel Microcomputer stop

H: Eject direction

DPX -6020

MICROCOMPUTER’S TERMINAL DESCRIPTION

(X14-)IC1:System µ-com

Pin Pin Name I/O Description Processing Operation

61 SEL1 I IC2III noise cancellation selection 62 Vec - Power input 63 NC O Not in use L: Fixed 64 Vss - Power input 65 SEL2 I IC2III noise cancellation selection 66 SEL3 I Location switching H : M , L: J 67 NC O Not in use. L: Fixed. 68 PACK_DET I PACK detection SW L: PACK 69 TA_MODE1 I Cassette MODE1 detection SW 70 TA_MODE2 I Cassette MODE2 detection SW 71 TA_MODE3 I Cassette MODE3 detection SW 72 TA_SMOTOR1 O Cassette sub motor control 1 73 TA_SMOTOR2 O Cassette sub motor control 2 74 TA_MOTOR O Cassette main motor control H: On 75 NC O Not in use. L: Fixed. 76 PLL CLK O PLL clock ouput 77 PLL DATA I/O PLL data input/output 78 PLL_CE O PLL selection 79 FMSD I FM station detection H: Station 80 PLL_REQ O PLL seek selection L: In seek 81 FM+B O FM Power H: FM 82 AM+B O AM Power L: AM 83 PMUTE O Power IC MUTE control H: MUTE on 84 ILLUMI I Illumination detecton L: Dimmer on 85 LINE_MUTE I External MUTE request L: Line MUTE on 86 PCON_IN I External amp peak current control H: Protection on 87 NC O Not in use. L: Fixed. 88 PWIC SVR O Power IC control H: On 89 TEST O Power IC control L: In test mode 90 PWIC_STBY O Power IC standby H: On 91 F_REEL I Reel pulse (FWD) detection SW Vth: 2.5V 92 R_REEL I Reel pulse (RWD) detection SW Vth: 2.5V 93 TAPE_DET I Tape detection H: Tape (A/D input) 94 CD_DET I CD detection sensor input H: CD (AD input) 95 PMODE I Panel position sensor input (AD input) 96 Avss I Analog power input 97 FSD OUT I S-meter input H: Station (AD input) 98 Vref - A-D reference voltage input 99 Avcc I Analog power input

100 DSP_XLAT O DSP write request

DP X-6020

MICROCOMPUTER’S TERMINAL DESCRIPTION

(X25-)IC4:Panel µ-com

Pin Pin Name I/O Description Processing Operation

1 GSO1 O FL dot section data output terminal 1 2 GCLK O FL dot section clock output terminal 3 NC O Not used. L : Fixed. 4 REMO I Remote control signal input 5 GSO2 O FL dot section data output terminal 2 6 NC O Not used. 7 GCLK I FL dot section clock input terminal

8~14 NC O Not used. L : Fixed.

15 BYTE 16 CNVss -

17,18 NC O Not used. L : Fixed.

19 RESET - Reset terminal L : Reset 20 Xout 21 Vss - GND terminal 22 Xin 23 Vcc - Power source terminal 24 NMI I 25 NC O Not used. L : Fixed. 26 SP_REQ O Space analyzer enable output 27 PN_SCCON I System control communication panel action control L : Action OK 28 SP_INT O Spectrum analyzer data control request output 29 GCP O FL dot section gradation generation 30 GLAT O FL dot section data latch output 31 GBK O FL dot section data blanking output H : Turned on, L : Turned off

32~34 NC O Not used. L : Fixed.

35 SP_CLK O Spectrum analyzer data output clock 36 SP_DATA_IN I Spectrum analyzer data output 37 NC O Not used. 38 PN_SC_DATA O System control comm unication data input terminal 39 Vcc I Power source terminal 40 PN_MC_DATA I System control communication data input terminal 41 Vss I GND terminal 42 PN_RTS O Panel communication request output 43 PN_CTS I Panel communication request input 44 GSO3 O FL dot section data output ter minal3 45 NC O Not used. L : Fixed. 46 GCLK I FL dot section clock input terminal

47~51 NC O Not used. L : Fixed..

52 NC I Not used.

53~55 - -

56 SEL I Destination s witching H : C-0050W, L : C-0066W 57 Vss - GND terminal

DPX -6020

MICROCOMPUTER’S TERMINAL DESCRIPTION

(X25-)IC4:Panel µ-com

Pin Pin Name I/O Description Processing Operation

58 NC O Not used. L : Fixed. 59 Vcc - Power source terminal

60~62 NC O Not used. L : Fixed.

63 RD O External memory read request L : Read 64 NC - L : Fixed.

65~68 NC O Not used. L : Fixed.

69 CS0 O External ROM CE terminal L : External ROM selection

70,71 NC O Not used. H : Fixed

72 A20 O External bus ADDR 20 73 A19 O External bus ADDR 19 74 Vcc - Power source terminal 75 A18 O External bus ADDR 18 76 Vss - GND terminal

77~85 A17~A9 O External bus ADDR 17~9 86~90 NC O Not used. L : Fixed.

91 Vcc - Power source terminal 92 A8 O External bus ADDR 8 93 Vss - GND terminal

94~100 A7~A1 O External bus ADDR 7~1

101 NC O Not used. L : Fixed. 102~113 D15~D4 I/O External bus DATA 15~4 114~118 NC O Not used. L : Fixed. 119~122 D3~D0 I/O External bus DATA 3~0

123 NC O Not used. L : Fixed. 124~128 KS0~KS4 O Key scan output 0~4

129 KR5 I Key return signal input 5

130 Vss - GND terminal

131 NC O Not used. L : Fixed.

132 Vcc - Power source terminal

133 NC O Not used. L : Fixed.

134 KR0 I Key return signal input 0

135 PON O Power source control terminal H : POWER ON

136 NC O Not used. L : Fixed 137~139 KR1~KR3 I Key return signal input 1~3

140 Avss - GND ter minal

141 KR4 I Key return signal input 4

142 Vref -

143 Avcc - Power source terminal

144 NC I Not used.

PANEL MECHANISM DESCRIPTION

612

604

608

604

609

620

621

616

603

602

PM1

A. Panel Opening

1. When Open button(switch) is pressed, the motor (PM1) rotates.

2. The rotation of the motor is transmitted forward through the rack gear (616) via the gears (620~622)

3. When the rack gear (616) mov es, the panel (PA1)goes down.

PM1

604

608

609

DP X-6020

B. Closing Behavior

1. The motor rotates in reverse direction.

2. The arm assembly (604) goes up. When the le ver (A) goes into the lock position of the rail (612), the arm assembly (604) stops going up.

602

616

620

621

4. (1) The upper side of the panel pushed on the ar m assembly (604) by the pin (]2) and the g roove of the rail (]3).

(2) The lock on the lever (A) is let go and the arm

assembly (604) goes down.

(3) When this happens, the planetary gear (603) ro-

tates.

5. When the arm assembly goes down to the open po-

sition, the switch (PS1) is turned on. When the switch (PS1) is turned on, the motor stops after 950ms.

608

612

603

620

604

3. When the arm assembly (604) stops, by the rotation of the planetary gear (603), the motor rotation pushes the rack gear (616) backw ard via the gears (620~622).

4. By the close position information of the LPS (VR1), the motor (PM1) stops after 200mS.

C. Angle Behavior

1. By the position information of the LPS (VR1), the panel angle is controlled.

PS1

604

VR1

614

VR1

616

601

PM1

DPX -6020

PANEL MECHANISM DESCRIPTION

D. Assembly (Close Position)

1. Align the arm assembly with the pin of the planetary gear (603).

2. Assembly these to the sub-chassis (606) along with the rail (612).

3. Align lever (614) hole and the hold of the chassis (601).

4. Lead wires of LPS should be kept in place with a tape so that they would not interfere with rack gear (616).

612

604

606

603

608

609

625

DPX -6020

TEST MODE / ADJUSTMENT

■How to enter the text mode

While pressing on 1 and 3 keys, press the RESET key.

■Starting on the test mode

Major initial positions

•

When booted with everything off, the test mode starts up.

• The valueof the volume is –40dB (indication is 15).

• FL lamps all light up.

• The diversity is off.

• Position: All.

• EQ: Flat

• COMPRESSOR: OFF

• SPE/ANA: PEAK HOLD

■All display lamps lighting up

Since there are many segments on the display section, bridging with other segments can be confirmed. By track up/down keys, grids and segments can be lighted up individually.

■

Opening/Closing Time of the Panel Mechanism

When each time the Angle/Retune button is pressed, time is displayed after going into the tuner mode. From the maximum angle to return, it takes about 1.2S.

■CD Mechanism Panel Disk Detection

Sensor behavior for detecting whether there is CD disk or not can be checked. When the sensor is closed off after a disk is inserted, it beeps four times.

■

FM S-Meter Adjustment (Stop Adjustment and others)

Method:

SG Output: Set to 35dBµ 98.1MHz. (with no modulation) During the above text mode, when Preset 1 and Preset 6. are pressed at the same time, the adjustment begins. When adjustments is completed normally, OK is displayed and there will be one beep of 2kHz. In this case the stop adjustment values will be between 15~25dBµ.

When the S-meter value is outside of the standard system control values, NG is display ed and the initial value of the system control is written in the E2PROM.

■AM Stop Adjustment

Method:

SG Output: Set to 35dBµ 999kHz. (with no modulation) During the above text mode, when Preset 1 and Preset 6. are pressed at the same time, the adjustment begins. When adjustments is completed normally, OK is displayed and there will be one beep of 2kHz. In this case the stop adjustment values will be between 30~43dBµ . When the S-meter value is outside of the standard system control values, NG is display ed and the initial value of the system control is written in the E2PROM.

■Panel Mechanism Adjustment

The mechanism detects the open/close position of the panel

and writes it to the E2PROM.

[ How to enter the test mode ]

After entering the above-mentioned test mode, switch over to the tuner mode. Then, press on the TI knob for some time and the unit will go into panel mechanism test mode, which is indicated by STAND-BY display.

Method:

Each time Open/Close key (*k ey) of the remote controller is pressed, full-open and full-close positions are registered. (There will be OPEN ENTRY/ CLOSE ENTRY displa y and three beeps are sound.)

Releasing:

When TI key is pressed, the unit goes back to the previous test mode. Pressing the reset key will take the unit to the initial condition.

■DOLBY Adjustment

Using the extension cord (W05-0755-00), separate the mechanism from the unit. Play the TCC-130 and adjust the test round value to 300mV with the VR1, 2 on the X30 Board. (Refer to the PC BOARD.) Balance with FWD and REV.

■Releasing the Security Code

The unit will go into release mode when Preset 6 is pressed while Preset 1 is being pressed. The character “C” is displayed at the right end of the character display. At this point, input KCAR by using 1, 2, 3, and 4 key of the remote controller. Confirm with PLAY/PAUSE key and the security code will be released.

■

Specifications for the Amplifier Control Terminal

The bass boost function of the amplifier can be remote control from the unit. This is a one-way communication, using one control line. The control is made with pulse widths of the three kinds of communication data. Fiv e cycle pulses are gener ated from the unit side and when there are three consecutive successes, communication is established. The pulse widths are as shown below and the cycle is 200ms.

HI: 100ms

LOW: 70ms

OFF: 40ms

DPX -6020

ADJUSTMENT

■ Tuner Adjustment

Item Input Side (SG) Tuner Setting Adjustment Method Setting FM S-Meter Adjustment 98.1MHz 0dev FM 98.1MHz Enter the test mode and select a FM source.

35dBµ (ANT Input) When Preset #6 is pressed while pressing Preset #1 in the test

mode, adjustment is started. When adjusted properly, OK is displayed and 2kHz beep is sounded once. The stop adjustment value at the time will be within15~25dBµ. If the S-meter value is outside of the system computer standard values, NG is displayed and the default values of the system

computer is writting to the E2PROM. AM Seek Stop 999kHz 0%Mod AM 999kHz Enter the test mode and select AM source. Level Adjustment 35dBµ (ANT input) When Preset #6 is pressed while pressing Preset #1 in the test

mode, adjustment is started. When adjusted properly, OK is

displayed and 2kHz beep is sounded once.

The stop adjustment value at the time will be within 30~43dBµ.

If the S-meter value is outside of the system computer standard

values, NG is displayed and the default values of the system

computer is writting to the E2PROM.

Note : For frequency of the input side SG, choose a frequency with no broadcast station.

How to enter the test mode

Press [RESET] while pressing the Preset #1 and Preset #3.

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