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Kenwood MDX-G1 Service Manual

Md personal stereo system
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MD PERSONAL STEREO SYSTEM
MDX-G1
QQ
3 7 63 1515 0
SERVICE MANUAL
Note: Please contact KENWOOD service in your side if you want to get the AC power cord.
TE
L 13942296513
www
MDX-G1 has 3color; W: White, S: Silver, Y: Yellow
.
In compliance with Federal Regulations, following are
reproduction of labels on, or inside the product relating to
laser product safety.
STANDBY
PROG.
O.T.T.
SLEEP
HIGH-SPEED
LP
BEST HITS
/TIMER
TRACK NO.
DISC
TOTAL
AUTO TUNED
O.T.E
SP
REC
MD-EDIT
EX. BASS
PGM
ONE
kHz
REPEAT
LOUD
RANDOM
MHz
MD PERSONAL STEREO SYSTEM
ON/STANDBY
EJECT
DISC LOADING MECHANISM
Plastic cabinet *
(A02-)
AC IN ~
AC inlet
(E03-0374-05)
x
ao
u163
y
i
2 9
8
Panel ass'y *
Handle *
(A60-)
(K01-)
CD/MD High Speed Dubbing System
Q Q
3
6 7
1 3
1 5
Rod antenna
(T90-0828-05)
co
* Refer to parts list on page 25 .
.
KENWOOD-Crop. 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.
9 4
2 8
© 2001-6 PRINTED IN KOREA
B51-5734-00 (K/K) 481
Arm
(D10-5011-04)
AUX
MD REC
BEST HITS
TUNING
MENU
SOUND
SET
MODE
VOLUME/MULTI CONTROL
4
TUNING/ ¢
/ TUNING
STOP
TUNER FM/AM
CD
MD
PUSH OPEN
0 5
8
2 9
9 4
2 8
Top ass'y *
(A52-)
Miniature phone jack
(E11-0353-05)
AM
ANTENNA
AUX IN
PHONES
Miniature phone jack
(E11-0399-05)
m
9 9
9 9
70%

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  Summary of Contents for Kenwood MDX-G1

  • Page 1 MDX-G1 3 7 63 1515 0 SERVICE MANUAL © 2001-6 PRINTED IN KOREA B51-5734-00 (K/K) 481 Note: Please contact KENWOOD service in your side if you want to get the AC power cord. Panel ass'y * Handle * (A60-) (K01-)
  • Page 2: Table Of Contents

    MDX-G1 CONTENTS / ACCESSORIES / CAUTIONS 3 7 63 1515 0 Contents CONTENTS / ACCESSORIES / CAUTIONS..... 2 SCHEMATIC DIAGRAM .......... 16 CIRCUIT DESCRIPTION ..........3 EXPLODED VIEW ............26 ADJUSTMENT ............11 PARTS LIST..............28 WIRING DIAGRAM ...........12 SPECIFICATIONS ........Back cover PC BOARD .............. 13...
  • Page 3: Circuit Description

    MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION 1. Initializing P.CH Band Frequency P.CH Band Frequency 531kHz 87.50MHz 1-1 Initialization Method 87.50MHz 87.50MHz • While pressing the [ON/STANDBY] key, turn the AC 87.50MHz 87.50MHz 87.50MHz 108.0MHz 87.50MHz 945kHz 1-2 Initialization Operation •...
  • Page 4 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION 4-5 MD Test Mode KEYS DISPLAY OPERATION STOP Tno. 00 : 00 • Stop the MD operation. SKIP UP/SKIP DOWN Usual Indication • MD Track No up or down. SKIP UP • MD FF search.
  • Page 5 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION 5) Take care that VC and GND (ground) are not connected 1. The recording start addresses of IN, MID, and OUT are described below. on the oscilloscope when two or more signals are moni- 30H cluster tored on the oscilloscope.
  • Page 6 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION During this adjustment, the oscilloscope changes in units 2. Laser Power Check of about 2%. Adjust so that the waveform comes nearest Display/Function 1 4 ¢ [LDPWR CHEC] to the specified value. (MO groove read power traverse 2 MD 6 [(c0.9mW) $xx]...
  • Page 7 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION C1 error Display/Function  TE B. CD  (Automatic Adjustment - MD 6 Mode Indication) = High Reflection • PIT • Reading Power Display shows  EFB = XXX SAVE  = MD 6 in brief time and save the data in E2PROM.
  • Page 8 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION 7-2 Key Matrix Input Voltage KEY 1 KEY 2 Pin94 Pin93 0.00 0.45 POWER 0.48 1.10 MD EJECT 1.13 1.78 BEST HITS SKIP DOWN 1.81 2.37 SOUND STOP 2.41 2.80 SKIP UP 2.84 3.25...
  • Page 9 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION Active Port No. Port Name Description EEP SDA Unused. EEP SCL Unused. Unused. NC(EPM) Unused. 42~45 Unused. (CE) Unused. LED STBY Standby led (red) control port. LED TIMER Timer led (green) control port.
  • Page 10 MDX-G1 3 7 63 1515 0 CIRCUIT DESCRIPTION 8. Port Description of CD RF IC : AN8806SBM (X09,IC21) Port No. Port Name Description APC Amp input APC Amp output LD ON APC ON/OFF control APC reference voltage adjusting Power supply...
  • Page 11: Adjustment

    MDX-G1 3 7 63 1515 0 ADJUSTMENT Tuner adjustment I N P U T OUTPUT RECEIVER ALIGNMENT I T E M ALIGN FOR F I G . N o . S E T T I N G S S E T T I N G S...
  • Page 12 L 1 3 9 4 2 2 9 6 5 1 3 MAIN UNIT (X09-6500-21) (A/6) CN54 CN41 CN52 CN53 CN42 WH69 ANTENNA CN35 CN33 CN32 ANTENNA TACT SWITCH SP (L) SP (R) TUNER UNIT UNIT (X09) (C/6) (X09) (E/6) DISPLAY UNIT(FL) CN34 (X09) (D/6) u 1 6 3 MDX-G1...
  • Page 13: Pc Board

    PC BOARD (Component side view) 3 7 63 1515 0 X33-1260-00 A/2 (J70-1452-02) R100 X33 B/2 R102 R101 B E B R103 L 13942296513 R113 R112 R115 R114 R119 R120 R118 BLUE R116 u163 Refer to the schematic diagram for the value of resistors and capacitors.
  • Page 14 PC BOARD(Component side view) 3 7 6 3 1 5 1 5 0 X09-6500-00 A/6 (J70-1500-21) X09 D/6 CN42 D502 C802 C406 C593 IC41 C435 C409 IC52 R579 C587 W509 R784 C407 R404 G I O R583 R577 R402 W490 R785 R401 C411...
  • Page 15 (X33-1260-00) (A/2) 3 7 6 3 1 5 1 5 0 : CXD2662R : UMW1N SPDL+ : CXA2523AR Q2,9 : 2SA1576A(R,S) SPDL- CXA2523AR : 2SB798-DL SLED+ : HD6432227N22FA Q4,11 : DTA144EUA BA5984FP Q5,6 : DTC114YUA SLED- : LC32S4400T-10 : DTA124EUA LOAD M+ : RC1117ST Q8,10...
  • Page 16 REC IN (Rch) AINL DGND AINR DIGITAL IN MECHARST w w w BACKON R65 100 CRXD u 1 6 3 R66 100 CTXD R50 100 +3.3V +3.3V +3.5V BACKUPV 3.5V +3.5V +3.5V(OUT PUT) HGND 5.0V 26 H+5V MDX-G1 MDX-G1/G2 (1/2) Y39-3930-21...
  • Page 17 X33-A/2 -CN1 (X09-6500-21) (C/6) CN33 STEREO A301 (W02-2786-05) 3 7 6 3 1 5 1 5 0 FRONT END CN34 5.6V ANT1 2-4P 0-100 to FM ROD IF OUT ANTENNA D301 L304 C312 2.2u50 ANT2 ST : 4.5V L305 D303 C340 R323 1.3V...
  • Page 18 (X09- ) (A/6) CN54 CN51 C758 1 R518 2.7K L501 5.0V PLL CE H+5V 3 7 6 3 1 5 1 5 0 C860 100P PLL DT L506 C861 100P HGND 3.5V PLL CLK C544 100P +3.5V +3.5V (X09- ) (F/6) PLL DO BACKUPV 9.1V...
  • Page 19 MTZJ2.7 (B) or R42 13K R41 6.2K R40 3.3K R39 2.2K R38 2.2K RD2.7ES (B) or HZS2.7N (B2) D435 MTZJ3.9 (B) or w w w RD3.9ES (B) or HZS3.9N (B2) D501 : 1SS402 MDX-G1(M) (2/2) u 1 6 3 MDX-G1 Y39-3930-21...
  • Page 20: Exploded View

    MDX-G1 3 7 63 1515 0 EXPLODED VIEW (MECHANISM) LMMD DMMD L 13942296513 FMMD RHMD PUMD u163 MDM-07(1) (MDX-G1) Parts with exploded numbers larger than 700 are not supplied.
  • Page 21 L 1 3 9 4 2 2 9 6 5 1 3 φ3x8 : N82-3008-46 (GRN) (5P) (GRN) (15P) (X09-) (16P) (RED) (16P) (D/6) (X09-)(B/6) PHONES J402 (X09-6500-00) (A/6) T401 (5P) (11P) AC IN∼ (26P) J401 (26P) POWER MD EJECT T402 (15P) u 1 6 3 MDX-G1...
  • Page 22 Parts No. Description Ref. No Parts nation marks ress ress Parts nation marks ✽ H12-3523-05 PACKING FIXTURE MDX-G1 W:White, S:Silver, Y:Yellow ✽ H12-3524-05 PACKING FIXTURE ✽ H21-1506-04 PROTECTION SHEET ✽ A02-3017-01 PLASTIC CABINET H25-1642-04 PROTECTION BAG ✽ A02-3018-01 PLASTIC CABINET ✽...
  • Page 23 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 24 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 25 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 26 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 27 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 28 3 7 6 3 1 5 1 5 0 ✽ New Parts ✽ New Parts Parts without Parts No. are not supplied. Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Les articles non mentionnes dans le Parts No.
  • Page 29: Specifications

    D : 189 mm (7-7/16") Weight (net) ............. 5.6 kg (12.3lb) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Notes • Sufficient performance may not be exhibited at extremely cold locations (Where water freezes).