Kenwood DPCX-707, DPCX-802 Service manual

PORTABLE CD PLAYER

Format

System ............................................................................ Compact disc digital audio system

Laser ....................................................................................................... Semiconductor laser

Audio

Frequency response..........................................................................20 Hz to 20 kHz, 3 dB

PHONES output level (16Ω, 1 kHz ) ............................................................10 mW + 10 mW

Line output/impedance ................................................................................... 0.55 Vrms/1 kΩ

Power supply

External DC supply ........................................................................................... 4.5V to 6 V DC

Rechargeable batteries (NB-88) x 2 or 4 ...................................................................DC 2.4 V

Commercially-available alkaline batteries (LR6/AA) x 2 or 4....................................... DC 3 V

Battery life (continuous repeat playback)

(Figures inside parentheses show the performance when the D.A.S.C. is ON.)

Commercially-available alkaline batteries (LR6/AA) x 2 .................................... Approx. 12 (9.5) Hours

Commercially-available alkaline batteries (LR6/AA) x 4 ..................................... Approx. 29 (20) Hours

Rechargeable batteries (NB-88) x 2 ................................................................... Approx. 5.5 (4.5) Hours

Alkaline batteries (LR6/AA) x 2 and rechargeable batteries (NB-88) x 2 ............ Approx. 18 (15) Hours

Dimensions (W x H x D) ............................................................129 mm

29.5 mm x 151 mm

(5 - 1/16"

1 - 3/16" x 5-15/16")

Weight (net) .......................................................................................................... 272 g (9.6 oz)

Note:

KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

70%

DPC-X707/X802

SERVICE MANUAL

CD door assy (A53-2169-08)

Top cabinet (A02-2923-08)

Knob (OPEN) (K27-2379-08)

Knob (REPEAT/P.MODE) (K27-2381-08)

* Refer to parts list on page 12.

SPECIFICATIONS

In compliance with Federal Regulations, following are reproductions of labels on, or inside the product relating to laser product safety.

KENWOOD-Corp. certifies this equipment conforms to DHHS Regulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.

DANGER : Laser radiation when open and interlock defeated. AVOID DIRECT EXPOSURE TO BEAM.

Phone jack or OPT out *

DC jack (E03-0356-08)

Phone jack (E11-0372-08)

Potentionmeter (R31-0086-08)

DPC-X707/X802

CONTENTS / ACCESSORIES

SPECIFICATIONS.........................................Top cover

CONTENTS / ACCESSORIES ....................................2

CIRCUIT DESCRIPTION.............................................3

PC BOARD ..................................................................5

Accessories

SCHEMATIC DIAGRAM..............................................7

EXPLODED VIEW .....................................................11

PARTS LIST...............................................................12

Car cassette adapter (1) (W01-0922-05): X802 Model

LCD remocon (1) (A70-1171-05): M7X7

Car battery adapter (1) (W01-0921-05): X802 Model

Innerphone (1) (W01-0923-05): M7X7 (W01-0925-05): X8E8E7M8 (W01-0975-08): T7T8

AC adapter (1) (W08-0658-08): E8E7 (W08-0675-08): M7M8 (W08-0679-08): X8X7 (W09-1251-05): K8P8 (W08-0678-08): T7T8

Headphone (1) (W01-0924-05): K8P8

AC plug adaptor (1) (E03-0115-05): M7M8

Rechargeable battery (2) (W09-1240-05): M7E7X7

M8T7T8

DPC-X707/X802

CIRCUIT DESCRIPTION

1. Microprocessor:CXP83517Q(IC3)

1-1Pin Description

Pin No. Name I/O Description

1 BEEP O NOT USED 2 PE6 - NOT USED 3 SENS2 I SENSITIVITY INPUT 4 FOK I FOCUS OK SIGNAL L: FOCUS DOWN H:FOCUS OK 5 SQCK O SUB Q SIGNAL READ TIMING CLOCK (TO CXD3009Q) 6 SQSO I CD SUB CODE INPUT (FROM CXD3009Q) 7 DATA O DATA TO CXD3009Q 8 YMCLK O SIGNAL OUTPUT (TO SM5903AF)

9 ZSENSE I SENSITIVE SIGNAL INPUT(FROM SM5903AF) 10 YMDATA O DATA SIGNAL OUTPUT (TO SM5903AF) 11 AMUTE O AUDIO MUTE L: MUTE OFF H: MUTE ON 12 MIX O NOT USED 13 SOUND O NOT USED 14 BBS O NOT USED 15 REM-DATA O REMOCON DATA OUTPUT 16 OPT O NOT USED 17 LIGHT O BACK LIGHT SIGNAL OUTPUT L: ON H: OFF 18 POWER O POWER OUTPUT L: OFF H: ON 19 DIG-OUT I DIGITAL OUTPUT ON/OFF CONTROL L: OFF H: ON 20 BATT I BATTERY POWER SUPPLY MONITOR 1.4V~3.0V :OUTSIDE P.S 0V~1.4V :INSIDE BATT.

21 RECHG I 22 KEY I KEY INPUT

23 REKEY I REMOCON KEY INPUT 24 HOLD I HOLD SW INPUT 25 DRAM I DRAM SET UP INPUT

26,27 DASC1,2 I DASC SW1(HI)/SW2(ST) INPUT L: HI H: OFF H: ST

28 NRESET I SYSTEM RESET 29 EXTAL - SYSTEM CLOCK 30 XTAL - SYSTEM CLOCK 31 VSS - GND 32 VL - LCD POWER SUPPLY

33~35 VLC3~1 - LCD POWER SUPPLY 36~39 COM0~3 O COMMON SIGNAL(0~3) TO LCD 40~54 L SEG0~14 O SEGMENT SIGNAL (SEG0~14) TO LCD

55 L SEG15 O NOT USED 56 PDO O NOT USED 57 CHG-OUT O RECHARGEABLE ACTIVE OUTPUT L: OFF H: ON 58 B.B/P.GE O NOT USED 59 TIMER O NOT USED 60 PD4 O NOT USED 61 DBB O DBB SIGNAL OUTPUT H: DSP B.B OFF L: DSP B.B MID or MAX 62 REM-LGH O NOT USED 63 REM-DAT O REMOCON DATA OUTPUT L: OUTPUT DATA H: OFF 64 PFO O EMPHASIS TO CXD3009Q L: OFF H: ON 65 PF1 O LATCH TO CXD3009Q 66 YMLD O LATCH TO SM5902 67 YDMUTE O MUTE TO SM5902 L: OFF H: ON 68 RESET O RESET TO CXD3009Q/CXA2542/SM5903AF L: RESET 69 PF5 O NOT USED 70 VDD - POWER SUPPLY 71 TX - NOT USED 72 TEX - NOT USED 73 NC - NOT USED 74 PF6 - NOT USED 75 PF7 - NOT USED 76 SCOR I SUB CODE SYNCHRO INPUT FROM CXD3009Q 77 DOOR I CD DOOR OPEN DETECT INPUT/OUTPUT L: CLOSE H: OPEN 78 EMP I DECREASE VOLTAGE DETECT L: EMP H: FULL 79 SENSE I SENSITIVITY SIGNAL INPUT FROM CXD3009Q 80 BB/P.GEIN I CONNECT TO GND

RECHARGEABLE MONITOR

1.5V~3.0V :NON RECHARGEABLE 0V~1.5V :EXIST RECHARGEABLE

DPC-X707/X802

SSP/CXA2542AQ

SENS

SENS2

FOK

XRST

XLT

DATA

SENS

XLAT

CLOK

SCOR

SQSO

SQCK

XRST

EMPHI

ZSENSE

NRESET

YDMUTE

YMLD

YMDATA

YMCLK

PB6/SI1

PB4/SO0

RST

Power ON

OUTPUT

INPUT

4MHz

INT

EMP

RST CLK

PB2/SCK0

PE0/INT0

PB3/SI0

PB7/SO1

PB5/SCK1

XLON

SPOA

CLK

C.OUT

IC101

IC201

16.9MHz

(DASC on/off)

SERVO GAIN

SELECT

LIMIT SW

on/off CHECK

DSP/CXD3009Q

SEIN

CNIN

FOK

Back light power supply

OPT output on/off

Power supply monitor

Rechargeable battery check

HOLD/NORMAL/TEST mode

DOOR SW open/close check

DRAM

DASC ON/OFF or HI/OFF/ST

Operation key

Remocon key

Recharge on/off

OPT power supply

Remote control data

Mute

BEEP

ATT

Remocon Back light power supply

IC401

D.RAM cout./

SM5903AF

TRV DRIVER/

BA5901K

IC301

uCOM

IC3

CIRCUIT DESCRIPTION

1-2 VOLTAGE of A/D KEY

V(IC3,22PIN) KEY

0.00~0.74 PLAY/PAUSE

0.75~0.98 STOP

0.99~1.21 UP

1.22~1.42 B.BOOST

1-3 Microprocessor periphery block diagram

V(IC3,22PIN) KEY

1.43~1.68 DOWN

1.69~2.11 REPEAT/P.MODE

2.12~2.53 MUTE

2.54~3.00 KEY OFF

+ 9 hidden pages

Kenwood DPCX-707, DPCX-802 Service manual

SPECIFICATIONS

CONTENTS / ACCESSORIES

Contents

Accessories

CIRCUIT DESCRIPTION

1. Microprocessor:CXP83517Q(IC3)