Kenwood KDC-7027 Service Manual

CD RECEIVER

KDC-7 027 KDC-7 027Y

SERVICE MANUAL

Panel assy (A64-3234-01)

CD mechanism extension cord (24PIN) : W05-0935-00

Escutcheon (B07-3078-01)

DC cord (E30-4942-05)

Mounting hardware assy (J21-9823-03)

Antenna adaptor (T90-0552-05)

Screw set (N99-1734-05)

Panel assy (A64-3253-02)

Plastic cabinet assy (A02-2731-13)

Lever (D10-4674-04) x 2

TDF PANEL INFORMATION MODEL PARTS NO. PANEL NAME KDC-7027 KDC-7027Y

Y33-1790-61 TDF-M7000

KDC-7027/7027Y

BLOCK DIAGRAM

(X34- )

TUNER

AUDIO OUT

S-METER

BU5V

Q501

EEP5V

IC1

EEPROM

TDF UNIT (X16-208)

DISPLAY

UNIT

(X16-254)

SWITCH UNIT

(X16-256)

Q303,304

AM+B

BU5V 8V SERVO CD4.7V

BACK UP

IC9

REMO

8V 8V

BUFFER

IC14

RDS DECODER

EEPROM

SW5V

IC7

LEVEL SHIFT

IC11

u-COM

ROT ARY ENCODER

SW5V

LEVEL SHIFT

IC8

BU5V

IC2

IC4

IC10

KEY

KEY MATRIX

BPF

SW5V

IC1

2.5V

MASK ROM

FLASH ROM

BPF

AGC

BUFFER

LEDLED

ILL+

AGC

RESET SW

IC2

FM AM CD

E-VOL

MPX

QUAL

SYSTEM MICROPROCESSOR

PANEL5

Q6,10

PANEL SW5V

IC6

3.3V

SW3.3V

FL3.3V

Q2,3

FL+B

KEY ILL

IC15

MOTOR

FL+B

FAC

IC5

SYSTEM E'S+

IC20

FOCUS SW

IC8

SERVO

PANEL MECHA

SW5V

DC/DC

WOW

RESET

IC16

MOTOR DRDR

IC6

BU5V

IC9

MUTE DRIVER

Q207,208

PRE MUTE

Q203,204

PRE MUTE

Q205,206

PRE MUTE

IC4

POWER IC

BU5V

IC18

Q23,24

ANT-CON ANT CON

Q25

EXT AMP

Q26

DIMMER DIMMER

TEL MUTE

Q29

ACC DET

Q27

B.U DET

BU5V

SW5V

PANEL5V

SW14V

DC/DC A8V

SERVO

CD4.7V

IC13

IC12

IC11

P-CON P CON

Q1,2

BU5V

Q3,601

SW 5V

Q502,503

PANEL 5V

Q4,5

SW 14V

Q6-8

A8V

Q9,602

SERVO

Q11-14

FL+B

IC19

SW REG

OP AMP

AUX IN

PRE OUT (SUB WOOFER)

PRE OUT (REAR)

PRE OUT (FRONT)

SP OUT (FL) SP OUT (FR) SP OUT (RL) SP OUT (RR)

WIRED REMO/ OPEL DISP I/F

EXT.AMP.CON

TEL MUTE

ACC

BACK UP

CD PLAYER UNIT (X32-5550-00,01) PICK-UP

TR COIL FO COIL

SPINDLE MOTOR

LOADING & SLED MOTOR

KDC-7027/7 027Y

BLOCK DIAGRAM

MOTHER

BOARD

CLK

DATA

MRST

24 21

20 12 13

14 15 18

19 17

2 1 3 4

DOUT

MSTOP

MUTE L

MUTE R

L-ch R-ch

A8V A. GND

BU5V

D. GND

LOE/LIM SW

8EJE SW

12EJE SW

LOS SW S7.5V

S. GND MOTOR LO/EJ

DXM-6120V

IC2

1 CHIP IC

SERVO

PROCESSOR

u-COM

VREF

DRV MUTEMUTE

CLOCK

16.93MHz

PON

LOE/LIM

A+5V

REF

A. GND

D. GND

SW +5V

D. GND

5V REG

IC4

5V SW

(0-01)

ONLY

LPF

8V SW

VREF

D. GND

IC1

RF AMP

VREF

IC3

S. GND

D. GND

APC

MOTOR DRIVER

H L

SLED

COMPONENTS DESCRIPTION

● SUB CIRCUIT UNIT (X16-2080-10)

Ref No. Application / Functions Operation / Condition / Compatibility

IC1 E2PROM E2PROM for security

● DISPLAY UNIT (X16-2540-10)

Ref No. Application / Functions Operation / Condition / Compatibility

IC1 Driver LCD driver (Include KEY input function) IC2 Driver LCD driver IC3 Remote control IC For Remote control sensor Q1 SW Key scan start SW “ON” when Q1 base level goes L Q2 Red LED SW Red LED is turned on when Q2 base level goes H Q5 VLCD AVR Reference voltage Q6 SW Power supply control SW “ON” when base level goes L Q11 Dimmer control LCD back light control “OFF” when Q11 base level goes L D26 VLCD AVR Reference voltage

KDC-7027/7027Y

COMPONENTS DESCRIPTION

● SWITCH UNIT (X16-2560-11)

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 (X32-5550-00)

Ref No. Application / Functions Operation / Condition / Compatibility

Generation of RF signal based on the signals from the APC circuit and pickup, and

IC1 RF amplifier adapted for CD-RW

IC2 CD signal processor built-in MI-COM

IC4 4CH BTL driver Focus, Tracking coil, Feed and Spindle motor driver IC IC6 LPF Audio active LPF Q1 APC LD power control Q2 Q3 SW When P ON signal gose “H”, Q2 is ON Q3 A.8V SW When P ON signal gose “H” (Q2 is ON), Q3 is ON Q4 D.5V SW When P ON signal gose “L” (Q5 is ON), Q4 is ON Q5 Q4 SW (P-ON) When P ON signal gose “H”, Q5 is ON

generation of servo error (focusing error and tracking error) signals. Detection of dropout, anti-shock, track crossing and off-track conditions, included gain control function during CD-RW. Focusing, tracking, sled and spindle servo processing. Automatic adjustment (focusing, tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, subcodes, CIRC error correction, audio data Interpol ration) operations, and Microcomputer function.

● ELECTRIC UNIT (X34-3042-72)

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 Reset IC When BU5V line voltage is less than 3.5V, this IC output line is “L” IC8 Muting logic IC Control for MUTE, P-ANT & RESET muting IC12 RDS decoder Decode for RDS signal IC13,14 Motor driver Control for Panel mechanism motor Q1,2 BU 5V AVR While BU is applied when BU5V regulator output is +5V Q3 SW5V AVR When Q3base level goes L, 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 +8.4V Q9,34 Servo +B AVR When Q34 base level goes H, S+B regulator output is +7.4V Q11~14 Illumination +B AVR When Q11 base level goes H, AVR output is +10.5V Q25,26 P-CON SW When Q26 base level goes H, P-CPN SW output is +14V Q27,28 P-CON protection Protect Q27 by turning on when P-CON output is grounded Q29 Buffer EX amp control buffer Q30 Small lamp det. SW When Q30 base level goes H, Q30 turned ON

KDC-7027/7 027Y

COMPONENTS DESCRIPTION

Ref No. Application / Functions Operation / Condition / Compatibility

Q32 BU detector When Q32 base level goes H, Q32 turned ON Q33 ACC detector When Q33 base level goes H, Q33 turned ON Q51,52 Muting driver When base level goes L, muting driver is turned ON Q55,56,59,60 Q63 E2P 5V SW When Q63 base level goes L, E2P 5V is out for E2P ROM Q102,103 AM +B SW When Q102 base level goes H, AM +B is out to tuner unit Q104 Buffer Composite signal buffer for RDS

Pre-out muting SW When base level goes H, Pre-output is muted

MICROCOMPUTER’S TERMINAL DESCRIPTION

● SYSTEM MICROPROCESSOR : UPD703030GC043 (X34-304 : IC1)

Pin No. Pin Name I/O Description / Processing Operation

1 PLL DATA I/O Data input/output terminal for Tuner front-end 2 AM+B I/O AM+B (AM operation : H) 3 (FM+B) O FM+B (FM operation : H, Last FM : H with RDS,RBDS model) 4PAN E2P DATA I/O Variable illumination D/A converter, E2PROM DATA terminal 5PAN E2P CLK I/O Variable illumination D/A converter, E2PROM CLK terminal 6 EVDD - VDD 5V 7 EVSS - GND 8 AFS O Time constant switching for noise detection (FM seek, AF search, AUTO 0 : L, Receiving : H) 9 BEEP O BEEP audio output terminal 10 REMO I Remote control input terminal 11 P MUTE O Audio power IC muting control terminal (POWER OFF, ALL OFF, TEL MUTE : L) 12 SVR O Audio power IC SVR discharge circuit control terminal 13 IC2 SDA I/O CD mechanism, IC2, IC5, ROM correction DATA line 14 IC2 CLK I/O CD mechanism, IC2, IC5, ROM correction CLOCK line 15 P STBY O Audio power IC Stand-by terminal (POWER IC ON, ALL OFF : H, POWER IC OFF : L) 16 P CON I/O Power control terminal (POWER ON : H, POWER OFF, ALL OFF : Hi-Z) 17 DIMMER CONT O Dimmer control terminal (W-LED only : Pulse control F=1KHz, Normal : H) 18 TEST - NC (GND) 19 TYPE2 I Destination select terminal 20 MUTE O MUTE output terminal (ON : OPEN, OFF : L) 21 PRE MUTER O PREOUT (Rch) muting control terminal 22 PRE MUTEL O PREOUT (Lch) muting control terminal 23 BU DET I 24 ACC DET I ACC detection terminal (With ACC : L, Without ACC : H) 25 SW5V I/O SW5V control terminal (OFF : H, ON : L) 26 EXT AMP CONT O External amplifier control terminal

Momentary power dropped detection terminal (No Backup, Momentary power dropped : H, Backup : L)

Fig.

KDC-7027/7 027Y

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description / Processing Operation

27 DIMMER I Small lamp detection terminal (ON : L, OFF : H) 28 ANT CONT I/O Antenna control/ Destination select terminal (TUNER ON : H) 29 P ON I/O SW14V, SW5V control terminal (POWER ON : H, POWER OFF : Hi-Z) 30 ILL ON I/O FL, illumination control terminal (ON : H, OFF : Hi-Z) 31 RESET I Reset input terminal 32,33 XT1/XT2 - Sub clock (32.768KHz) 34 REGC - Connect to 1µF capacitor 35,36 X2/X1 - Main clock (20MHz) 37 VSS - GND 38 VDD - AVR 5V 39 CLKOUT - NC 40 LX REQ M O Communication request to external slave unit (Request : L) 41 LX MUTE I Mute request from external slave unit (MUTE : H) 42 LX CON O External slave unit (ON : H, OFF : L) 43 LX RST O Reset output to external slave unit (Normal : L, After system reset : H 400ms or more and then L) 44 CD MECHA+B O CD4.7V output terminal (CD : H, Except CD source : L) 45,46 TYPE0/TYPE1 I Destination select terminal 47,48 49 NC - NC 50 E2P5V I/O E2PROM, D/A converter power supply control terminal (ON : L, OFF : Hi-Z) 51 DSI I/O DSI control (ON : L, OFF : Hi-Z) 52 L CE O CE output to LCD driver IC 53 L INH O INN output to LCD driver IC (Normal : H reset, Momentary power dropped : L) 54 VOL A I Volume input terminal 55 DVDD - AVR 5V 56 DVSS - GND 57 VOL B I Volume input terminal 58 M RST O Reset output to CD mechanism (Normal : H, Reset : L) 59 M STOP O Stop request to CD mechanism (STOP : L, CD : H) 60 CD SW3 I CD DOWN SW detection terminal (CD disc chucking : H) 61 LO/EJ I/O CD mechanism loading/eject selector (STOP, Brake : Hi-Z, LOADING : L, EJECT : H) 62 MOSW O CD mechanism motor driver SW (LOADING, EJECT, Brake : H) 63 FPM MOTOR B O FPM mechanism (Slider) control terminal 1 64 FPM MOTOR F O FPM mechanism (Slider) control terminal 1 65 FPM MOTOR O O FPM mechanism (Angle) control terminal 1 66 FPM MOTOR C O FPM mechanism (Angle) control terminal 1 67 O DATA I/O External display DATA terminal 1 68 O CLK I/O External display CLK terminal 69 O CE I/O External display chip enable terminal 70 M MUTER I Mute request from CD mechanism (Rch ON : L) 71 AVDD - AVR 5V 72 AVSS - GND 73 AVREF I Connect to P-ON (29PIN) 74 M MUTEL I Mute request from CD mechanism (Lch ON : L)

IC2 TYPE0/TYPE1

I IC2 destination select terminal

Fig.

KDC-7027/7027Y

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description / Processing Operation

75 PAN DET I PANEL, E2PROM detection terminal (With panel : L, Without : H) 76 PHONE I PHONE detection terminal (TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more)

77 FPM SW4 I

78 FPM SW1 I FPM mechanism position detect terminal 1 79 FPM SW2 I FPM mechanism position detect terminal 1 80 FPM SW3 I FPM mechanism position detect terminal 1 81 FPM PHOUT I FPM mechanism position detect terminal (2.2V or more : H) 1 82 S METER I S meter detection terminal 83 NOISE I FM noise detection terminal 84 IFC OUT I Front end IFC OUT input terminal (Receiving station : 2.5V or more) 85 POWER DET I Audio power IC DC offset detection 86 CD SW4 I 8cmDISC detection terminal (8cmDISC : L) 87 R CLK I RDS decoder clock input terminal 88 LX REQ S I Receive request from external slave unit (Request : L) 89 SC REQ I Communication request from panel microprocessor 90 CD SW1 I LOADING SW detection terminal (LOADING start, POWER OFF : L) 91 CD SW2 I 12cmDISC detection terminal (12cmDISC, POWER OFF : L) 92 R QUAL I RDS decoder QUAL input terminal 93 R DATA I RDS decoder DATA input terminal 94 LX DATA S I Data input from external slave unit 95 LX DATA M O Data output to external slave unit 96 LX CLK I/O Clock input/ output with external slave unit 97 L DATAL I Data input from LCD driver 98 L DATAS O Data output to LCD driver 99 L CLK O CLK output to LCD driver 100 PLL CLK I/O Clock input/ output to Tuner front-end

FPM mechanism position detect/ CD Mechanism detection terminal (3.75V or more : No mechanism, 1.25V or more : H, Less than 1.25V : L)

Fig.

Fig.1 FPM motor control

SLIDE FPM mechanism

FPM MOTOR B FPM MOTOR F operation

LLStandby HLBackward operation LHForward operation HHBrake

FPM MOTOR O FPM MOTOR C operation

ANGLE FPM mechanism

LLStandby HLAngle open direction LHAngle close direction HHBrake

● CD SIGNAL PROCESSOR & CD MECHANISM CONTROL : MN662773KH2 (X32-555 : IC2)

Pin No. Pin Name I/O Description / Processing Operation

1 BDO I Dropout signal input (H : Dropout detected) 2 OFT I Off-track signal input (H : Off-track detected) 3 /RFDET I RF detection input (H : RF signal detected) 4 VDET I Vibration detection input (H : Vibration detected) 5 LDON O Laser diode ON signal output (H : Laser diode ON)

KDC-7027/7 027Y

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description / Processing Operation

6,7 NC - Not used (N.C.) 8AVSS3 - GND 9AVDD3 - VDD (BU5V) 10 FBAL O Focusing balance adjustment output 11 TBAL O Tracking balance adjustment output 12 FE I Focusing error signal input 13,14 NC - Not used (N.C.) 15 TE I Tracking error signal input 16-18 NC - Not used (N.C.) 19 REFNV I RF envelope signal input 20 VREF I VREF input terminal 21 ARF I RF signal input (for DSL) 22 DRF I DSL bias terminal 23 DSLF I/O DSL loop filter terminal 24 IREF I Reference current input terminal 25 PLLF I/O PLL loop filter terminal 26 PLLF2 I/O PLL loop filter characteristic switching terminal 27 VCOF I/O VCO loop filter terminal 28 VCOF2 I/O VCO loop filter terminal Digital servo 33.8688MHz generation 29 TRV O Traverse forced feed output 30 TVD O Traverse drive output 31 PC O Spindle motor ON/OFF output (Lo : ON) 32 ECM O Spindle motor drive output (forced mode output) 33 ECS O Spindle motor drive output 34 KICK O Kick pulse output 35 TRD O Tracking drive output 36 FOD O Focusing drive output 37 TOFS O Tracking off-set adjustment output 38 AVDD2 - VDD (BU5V) 39 AVSS2 - GND 40 DVSS2 O GND 41 EFM or CK384 O EFM signal output 42 PCK or DSLB O PLL sampling clock output 43 /CLDCK O Sub-code frame clock signal output 44 FCLK O Crystal frame clock signal output 45 IPFLAG O Interpolation flag signal output (H : Interpolated) 46 FLAG O Flag signal output 47 TRCRS I Track crossing signal input 48 STOUT O Serial data output for monitor signal 49 STLD O Load output for monitor signal 50 SMCK O Bit clock signal output for monitor signal 51 CSEL I Crystal oscillation frequency selection terminal (Hi : 33.8688MHz, Lo : 16.9344MHz) 52 TEST1 I Test terminal 1 Not used (Connected to GND lines) 53 TEST2 I Test terminal 2 Not used (Connected to GND lines)

KDC-7027/7027Y

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No. Pin Name I/O Description / Processing Operation

54 IOSEL I Audio DAC data input mode selection terminal (H : External data, L : Internal data) 55 NRST I Reset input (L : Reset) 56 BCLK O Bit clock output for SRDATA 57 LRCK O L/R identification signal output 58 SDDATA O Serial data output 59 SUBC O Sub-code serial output 60 SBCK I Clock input for Sub-code serial output 61 DQSY O CD-TEXT read permission signal output 62 DEMPH O De-emphasis detection signal output (H : ON) 63 TX O Digital audio interface signal output 64 PSEL I SRDATA input/Test terminal 65 MSEL I LRCK input/SMCK output frequency switching 66 SSEL I BCLK input 67 DVDD1 - VDD (BU5V) 68 X1 I Crystal oscillation circuit connection terminal 69 X2 O Crystal oscillation circuit connection terminal 70 DVSS2 - GND 71 XSUB1 I Microprocessor clock input terminal 72 XSUB2 O Microprocessor clock output terminal 73 DVDD2 - VDD (BU5V) 74,75 NC O Not used (N.C.) 76 73/74SEL I 73/74 selection terminal (H : CD-TEXT OFF, L : CD-TEXT ON) 77 DRV MUTE O Driver muting control terminal (L : Spindle motor, Focusing actuator and tracking actuator outputs OFF) 78,79 NC O Not used (N.C.) 80 TEST I Test mode switching terminal 81 ASEL I Audio output polarity detection terminal (H : Non inverted, L : Inverted) 82 PON O Audio/digital power supply control terminal (H : Power ON) 83 SEARCH O Servo IC gain switching control terminal (H : Search, L : Normal operation) 84 EQCNT O RF amplifier doable-speed switching control terminal 85 SW3 I Limit switch detection terminal (H-L : Pickup most inner position) 86 /AMUTE L O L ch. analogue muting control terminal (L : Muting requested) 87 /AMUTE R O R ch. analogue muting control terminal (L : Muting requested) 88 CD-RW O CD-RW control terminal (H : CD-RW, L : Normal operation) 89 /RST I System reset input terminal (L : System reset) 90 MECHASEL I 6000/6010 selection terminal (L : 6000 series, H : 6010 series) 91 /MSTOP I Standby detection terminal (H : Operation mode, L : Stop mode) 92 LDCNT O LD control terminal (H : LD ON, L : LD OFF) 93 DATA I/O I2C bus data line (communication line with System microprocessor) 94 /CLK I/O I2C bus clock line (communication line with System microprocessor) 95 HOT I Temperature protection detection terminal 96 AVREF - A/D converter reference voltage connection terminal (Connected to BU 5V lines) 97 OUT R O R ch. Audio output 98 AVDD1 - A/D converter positive power supply connection terminal (Connected to analogue 5V lines) 99 OUT L O L ch. Audio output 100 AVSS1 - GND

KDC-7027/7 027Y

TEST MODE

● How to enter the test mode

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

● How to exit from the test mode

While holding the Preset 6 key, reset the unit. Note : Turning ACC off, po wer off, momentary power down or panel detaching does not terminate the test mode.

● 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

• WOW : All OFF

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

• AUX : ON

• MENU SYSTEM Q : OFF

• Variable model : Default is white

• Multifunction : Source dependency (Preset, SCAN, etc.)

● 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” : Comm unication with the F/E is not possible.

● 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

● 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, resetting does not recognize the CD.

• Each press of the Track Up key jumps to the f ollowing track numbers : No. 9→No. 15→No. 10→No. 11→No. 12→No. 13→No. 22 →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 or the WMA disc is less than 9, 1st truck is played.

• When the disc media is CD, A short press of the Preset 1 key jumps to the track number 28.

• When the model is equipped the CD mechanism assembly adapted for MP3 or MP3/WMA disc, the mechanism name and version number are displayed during the FL model is lower stand and Display mode of LCD model is DNPS.

● Audio-related specifications

• Pressing the ✽ ke y on the remote initiates the audio adjustment mode.

• BL/F key on the Fader initials.

• Continuous holding of a remote control key is inhibited, and workings are short press of any keys.

• Bass, Middle and Treble are adjusted in 3 steps of -8 / 0 /+8 with the Track Up/Down keys (Default value at 0).

• Balance is adjusted in 3 steps of L15 / 0 / R15 with the Track Up/Down keys (Default value at 0).

•Fader is adjusted in 3 steps of R15 / 0 / F15 with the Track Up/Down keys (Default value at 0).

• HPF is adjusted in 2 steps of OFF / 170Hz (or 200Hz) with the Track Up/Down keys (Default value at OFF).

• LPF is adjusted in 2 steps of OFF / 120Hz with the Track Up/Down keys (Default value at OFF).

• Bass f, Bass Q, Bass EXT, Middle f, Middle Q and Treble f are not dealt with by the audio adjust.

• The WOW key passes during the audio adjustment as following steps (WOW model only).

Ordered TruBass FOCUS SRS Display

1 OFF OFF OFF SRS WOW OFF 2ONOFF OFF SRS T ruBass ON 3 OFF LOW OFF FOCUS LOW 4 OFF HIGH OFF FOCUS HIGH 5 OFF OFF ON SRS ON 6ONHIGH ON SRS WOW HIGH

TEST MODE

KDC-7027/7027Y

● Menu-related specifications

• A short press of the Q key initiates the menu mode.

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

• Continuous holding of a remote control key is inhibited, and workings are short press of any keys.

• Contrast is adjusted in 3 steps of 0 / 5 / 10 with the Track Up/Down keys (Default value at 5).

● 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.)

● Special display when the display is all on

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

[PRESET 1]

[PRESET 2]

[PRESET 3]

[PRESET 4]

[PRESET 5]

[PRESET 6]

FM key Display ROM collection version.

Version display (8 digits, Month/Day/Hour/Minute) (Display) SYS xxxxxxxx :

PAN xxxxxxxx : FL model only MEM

xxxxxxxx : Serial number display (8 digits) (Display) SNo xxxxxxxx Short press : View power ON time. (The All OFF period is not counted.) 2 seconds long press/hold : Clear power ON time at the power ON time displaying. (Display) PonTim xxxxx Max. 60000 (hours) Short press : Display CD operation time. 2 seconds long press/hold : Clear CD operation time at the CD operation time displaying. (Display) CDTim xxxxx Max. 60000 (hours) Short press : Display CD ejection count. 2 seconds long press/hold : Clear CD ejection count at the CD ejection count displaying. (Display) EjeCnt xxxxx Max. 60000 (times) Short press : Display Panel open/close count. 2 seconds long press/hold : Clear Panel open/close count at the Panel open/close count. (Display) PnCnt xxxxxx Max. 600000 (times)

(Display) ROM R xxx Invalid : “R – – –”

4 contrasts FL model only

AM key Display panel E2PROM condition.

(Display) P–ROM OK (Registered code)

P–ROM NG (Code is write in error) P–ROM WAIT (Unregistered code) P-ROM NON

(Panel security nonfunctional)

● Panel mechanism

• Auto-panel close inhibition when set-in the CD.

• The panel operation inhibition at power ON/OFF and ACC ON/OFF.

• The panel position changing Eject→Last with a short press of the PLAY/PAUSE keys.

● Other specifications

• No displays such as “CODE OFF/ON” during Power-ON.

• The LINE MUTE inhibition time is one second from 10 seconds when start-up the test mode.

• Do not write the security code with the security jig on the test mode.

• Do not write the serial with the serial writing jig on the test mode.

• OEM display output is not stop if OEM display not connection on the test mode.

● Demonstration mode

1. How to enter to the Demonstration mode

1. Hold down the [Q] key and [TI (AME)] k ey button when the power is on and press the Reset button.

2. This will enter to the Demonstration mode.

2. How to chancel the Demonstration mode

1. Hold-down the Preset [5] key button when the power is on and press the Reset button.

2. This will cancel the Demonstration mode.

KDC-7027/7 027Y

TEST MODE

● Security information

1. Forced Power ON mode (All models)

Even when the security (Cord) is approved, resetting the unit while holding the Q and Preset 4 keys makes it possible to turn the power ON for 30 minutes. After 30 minutes have elapsed, it is not possib le to return to the previous condition unless the unit is reset again. (Security code is doing not clear at this mode. Put the power on fill-in.) When panel security was set up for the unit when it is can not power on. In this case, you can use new ROM for the TDF panel that the unit can be power on for test mode. Note : Don’t enter the panel security set up for new ROM panel. User can not power on the unit.

2. Method of registration of the security code after EEPROM (F/E) replacement (Code security model)

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

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

3. When the message “Security” is displa yed, press and hold the Track Up/Down key for 1 second to enter the security registration mode.

4. Enter the code using the FM/AM/T r ack Up/Track Down keys. FM key : Number up AM key : Number down Track Up key : Cursor right shift Track Down key : Cursor left shift

5. Hold down the Track Up key for at least 3 seconds and the message, “RE-ENTER” appears, so once again enter the code according to Step 4 above.

6. Press and hold the Track Up key for 3 seconds until “APPROVED” is displayed.

7. Exit from the test mode. (See 2. How to exit from the test mode) Note 1 : All Clear is not applicable to the security code of this model. Note 2 : When the F/E changed, need re-inscription because the panel security is clear.

3. How to inscription the panel security code

1. Enter the test mode.

2. Pressing the AM key on all lighting, check the “P-ROM W AIT” display.

3. The NEXT key is long press 2 seconds, writing the code.

4. Display is “P-ROM OK”.

5. Exit from the test mode. Note : E2PROM connection is NG when displa y is “P-R OM NG”, so detach the panel and rewrite after the display is “PROM WAIT”. This code can not clear.

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