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JVC RS-WP1WT Service Manual

Cd portable system
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Download this manual See also: Service Manual, Instruction Manual
SERVICE MANUAL
TIMER
CLOCK
TIMER
ON/OFF
STAND BY/ON
SLEEP
DOWN
UP
SET
PROGRAM
RANDOM
AUTO
PRESET
REPEAT
TUNER
AUX
C D
TAPE
BAND
FM MODE
REVERSE MODE
REW
MULTI CONTROL
FF
DISPLAY
BASS/
TREBLE
AHB PRO
VOLUME
RM-SRSWP1J
REMOTE CONTROL
Contents
Safety Precautions
CD PORTABLE SYSTEM
CD PORTABLE SYSTEM RS-WP1
STANDBY
STANDBY/ON
BAND
REW
1-2
1-3
1-4
1-5
1-17
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
FF
operation unit Toc read
Areas suffix
J -------------------------- U.S.A
1-21
1-22
1-22
1-23
No.20943
May. 2001

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Summary of Contents for JVC RS-WP1WT

  • Page 1: Table Of Contents

    RS-WP1WT SERVICE MANUAL CD PORTABLE SYSTEM RS-WP1WT CD PORTABLE SYSTEM RS-WP1 STANDBY STANDBY/ON Areas suffix BAND J -------------------------- U.S.A TIMER CLOCK TIMER ON/OFF STAND BY/ON SLEEP DOWN PROGRAM RANDOM AUTO PRESET REPEAT TUNER TAPE BAND FM MODE REVERSE MODE MULTI CONTROL...
  • Page 2 RS-WP1WT 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

  • Page 3: Important For Laser Products

    RS-WP1WT Important for Laser Products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam.

  • Page 4: Preventing Static Electricity

    RS-WP1WT Preventing static electricity 1.Grounding to prevent damage by static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

  • Page 5: Disassembly Method

    RS-WP1WT Disassembly method Removing the front panel assembly / rear panel assembly (See Fig.1) Remove the nine screws A attaching the rear panel assembly on the back of the body. Pull out the front panel assembly and the rear panel assembly.
  • Page 6 RS-WP1WT Joint a Joint a Removing the function switch board (See Fig.4) Function switch board Prior to performing the following procedures, remove CN921 the rear panel assembly. Disconnect the card wire from connector CN921 on the function switch board. Remove the two screws D and move the function switch board in the direction of the arrow to disengage the two joints a.
  • Page 7 RS-WP1WT Removing the LCD board (See Fig.7 and 8) LCD board Prior to performing the following procedures, remove the rear panel assembly and the function switch Bracket board. Remove the four screws E attaching the bracket. Disconnect the card wire from connector CN421, CN422 and the wire from CN913 on the LCD board respectively.
  • Page 8 RS-WP1WT Removing the main board / sub (1) board Rear panel assembly / sub (2) board (See Fig.11 to 13) Prior to performing the following procedures, remove the rear panel assembly, the CD mechanism assembly section and the LCD board.
  • Page 9 RS-WP1WT Removing the remocon board (See Fig.14) Remocon board Prior to performing the following procedure, remove LCD board the rear panel assembly. CN913 Remove the screw M attaching the remocon board and disconnect the wire from connector CN913 on the LCD board.
  • Page 10 RS-WP1WT Removing the power board (See Fig.16 to 18) CN103 Prior to performing the following procedures, remove the rear panel assembly. CN102 Power board Disconnect the wire from connector CN101, CN102 and CN103 on the power board. Remove the four screws O attaching the power board.
  • Page 11 RS-WP1WT Removing the connection board (See Fig.19) Prior to performing the following procedures, remove the rear panel assembly. Disconnect the wire from connector CN102 on the power board. Remove the two screws P and pull out the connection board. Connection board CN112 Fig.19...
  • Page 12 RS-WP1WT <CD mechanism assembly section> CD mechanism cover Prior to performing the following procedures, remove the rear panel assembly and the CD mechanism assembly section. Removing the CD mechanism assembly (See Fig.22 to 26) CAUTION: Prior to disconnecting the flexible wire...
  • Page 13 RS-WP1WT Removing the CD servo board (See Fig.27) FW616 FW626 Prior to performing the following procedure, remove the CD servo assembly. Remove the four screws S retaining the CD servo board. OPEN / CLOSE switch board Unsolder FW616 where the wire extending from the OPEN / CLOSE switch board is soldered.
  • Page 14 RS-WP1WT <Cassette mechanism section> Cassette mechanism Removing the playback / recording & eraser head (See Fig. 1 to 3) While shifting the trigger arms seen on the right side of the head mount in the arrow direction, turn the flywheel R in counterclockwise direction until the Flywheel R head mount has gone out with a click (See Fig.
  • Page 15 RS-WP1WT Removing the head amplifier & mechanism control board (See Fig. 4) Remove the cassette mechanism assembly. Belt Disconnet the flexible wire from connctor CN31 to CN32 Main motor the flexible board. assembly After turning over the cassette mechanism assembly, remove the three screws A retaining the head amplifier &...
  • Page 16 RS-WP1WT Removing the flywheel (See Fig. 7 and 8) Remove the head amplifier & mechanism control P.C. board. Flywheel R Flywheel L Remove the main motor assembly. After turning over the cassette mechanism, remove the two slit washers 1 and fixing the capstan shafts R and L, and pull out the flywheel R and L respectively from behind the cassette mechanism.

  • Page 17: Adjustment Method

    RS-WP1WT Adjustment method Tuner section Measuring devices necessary for adjustment Voltage input to the tuner ......+B: DC 5.7 V 1. Low-frequency oscillator VT: DC 12 V It must have the ability to output 600ohm from 0 dBs Standard measuring output ..26.1 mV (0.28 V)/3ohm at an oscillation frequency of 20 Hz-50 Hz.
  • Page 18 RS-WP1WT Location of parts to be adjusted Cassette handling mechanism Cassette handling mechanism (reverse side) Head for recording, playing and erasing the tape Head azimuth adjusting Head azimuth adjusting screw (fast-forward) screw (rewind) CN31 Head for recording, Head azimuth adjusting...
  • Page 19 RS-WP1WT Adjustment of cassette handling mechanism Items Condition Method for adjustment Standard Parts to be and confirmation value adjusted Confirmation Test tape: VT-703 (10 kHz) (1) Play back the VT-703 test tape. Maximum Adjust the of head angle Measuring output terminal:...
  • Page 20 RS-WP1WT Standard values for confirmation of electronic performance Items Condition Method for adjustment Standard Parts to be and confirmation value adjusted Erasing Fast-forward and Load the test tape (AC-514 for TYPE II, TYPE II: 110 current rewind direction: AC-225 for TYPE I) into the tape...

  • Page 21: Flow Of Functional

    RS-WP1WT Flow of functional operation until TOC read Check Point Slider turns REST Play Key Power ON Confirm that the voltage at the pin3 SW ON. of CN612 is "H"\"L"\"H". Automatic tuning of TE offset Check that the voltage at the...

  • Page 22: Maintenance Of Laser Pickup

    RS-WP1WT Replacement of laser pickup Maintenance of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to Turn off the power switch and, disconnect the clean the lens with a alcohol soaked cotton power cord from the ac outlet.

  • Page 23: Description Of Major Ics

    RS-WP1WT Description of major ICs LA4905 (IC101) : Power amp IC 1. Terminal layout 2. Block diagram Vcc(SW) STBY Switching Standby SW regulator block Ripple H.L.S. SW B filter drive A B C D SW E H.L.S. : SW OUT1...
  • Page 24 RS-WP1WT BA15218F-XE (IC201, IC701) : Dual operation amplifier 1. Terminal layout OUT1 1 8 Vcc -IN1 2 7 OUT2 +IN1 3 6 -IN2 VEE 4 5 +IN2 2. Block diagram OTHER Q114 OUTPUT GP1U281X (IC801, IC802) : Receiver for remote controller –...
  • Page 25 RS-WP1WT KIA78R06PI(IC381) US 6V 1. Terminal layout 2. Block diagram V IN 1 V 0 BANDGAP REFERENCE PROTECTION OUTPUT ON/OFF 1 2 3 CONTROL Control OVERHEAT PROTECTION KIA78R08PI(IC301) SW 8V REGULATOR 1. Terminal layout 2. Block diagram V IN 1 V 0...
  • Page 26 RS-WP1WT LC72136N (IC2) : PLL frequency synthesizer 1. Terminal layout FM/AM LPFOUT LPFIN CLOCK FM/ST/VCO FMIN AM/FM AMIN IFCONT SDIN IFIN 2. Block diagram Phase Reference Detector Driver Charge Pump Swallow Counter Swallow Counter 1/16,1/17 4bit 1/16,1/17 4bit Unlock Detector...
  • Page 27 RS-WP1WT LC75342 (IC501) : E. volume 1. Terminal layout 2. Block diagram LVref CONTROL CIRCUIT LOGIC CIRCUIT INTERFACE CONTROL RVref CIRCUIT 3. Pin function Function Function Symbol Symbol Serial data and clock input for IC control Input signal connections Chip enable...
  • Page 28 RS-WP1WT MN101C38CHX (IC901) : System controller Pin No. Symbol Function COM 3~0 FL grid control signal output VLC 3~1 Power supply +5V 9,10 OSC2,1 Oscillation terminal (8MHz) Connect to GND 12,13 XI,XO Sub clock (32.768kHz) MMOD Connect to GND VREF-...
  • Page 29 RS-WP1WT MN35530 (IC601) : Digital servo & processor 1. Terminal layout 2. Pin function Symbol Function Symbol Function DVD3V Power supply ADPVCC Vcc for A/D input Data input DSLF Loop filter pin for DSL Data input Bias pin for DSL input...
  • Page 30 RS-WP1WT MN101C30AHY (IC602) : CD micon 1. Terminal layout 2. Pin function Symbol Function Symbol Function Connect to GND DOOR Door open/close sw detection input Connect to GND O MUTE Muting output Connect to GND DMUTE Digtal mute output Connect to GND...
  • Page 31 RS-WP1WT AN4801SB-W (IC603) : BTL DRIVER 1. Terminal layout 2. Block diagram SPIN 28 FIN2 27 FIN1 TRVIN 26 TRIN 25 FOIN RESET 24 VREF 23 SVCC 22 NC PGND1 21 NC PVCC1 20 STBY TRV- 19 PGND2 TRV+ 18 PVCC2...
  • Page 32 RS-WP1WT AN8838SB(IC604) : RF & Servo AMP 1. Terminal layout 2. Block diagram 28 PDF 27 PDE 26 VREF 25 TEOUT 24 TEN RFFB 23 TBAL 22 FBAL RF IN 21 FEN 20 FEOUT 19 ENV CSBRT 18 LDON 17 OFTR...
  • Page 33 RS-WP1WT M11L1644SA-50T (IC605) : D RAM 1. Terminal layout 2. Pin Function Symbol Function VSS1 A0-A10 Address Input Low Address strove Column Address Strove Write enable Input Output Enable Input DQ0-DQ3 Data in/out VCC, VCC1 Power Supply (+3.3V) VSS, VSS1...
  • Page 34 RS-WP1WT TA2104AN(IC1) : RadioTuner 1. Terminal layout & Block diagram FM RFout RF V CC AM RFin FM OSC AM OSC OSC OUT ST LED IF REQ DET OUT LPF1 LPF2 BUFF DECODE BUFF DIVIDE BUFF LEVEL BUFF 1 / 8...

  • Page 35: Rs-Wp1Wt

    RS-WP1WT VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan No.20943 200105...

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