Sony XR-C7200R Service Manual
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Sony XR-C7200R Service Manual

Sony XR-C7200R Service Manual

Fm/mw/lw, cassette
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See also: Installation Manual
SERVICE MANUAL
For RM-X2S (Remote Commander),
please refer to RM-X2S/X3S Service
Manual (9-960-039-∏) previously issued.
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
MICROFILM
XR-C7200R
Model Name Using Similar Mechanism
Tape Transport Mechanism Type
SPECIFICATIONS
FM/MW/LW CASSETTE CAR STEREO
AEP Model
UK Model
NEW
MG-25D-136

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  • Page 1 XR-C7200R SERVICE MANUAL AEP Model UK Model For RM-X2S (Remote Commander), please refer to RM-X2S/X3S Service Manual (9-960-039-∏) previously issued. Dolby noise reduction manufactured under license Model Name Using Similar Mechanism from Dolby Laboratories Licensing Corporation. Tape Transport Mechanism Type MG-25D-136 “DOLBY”...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS GENERAL Location of Controls ............3 Resetting the Unit ............4 Detaching the Front Panel ..........4 Setting the Clock ............. 4 Using the Rotary Commander ........5 Installation ............... 6 Connections ..............7 DISASSEMBLY ............10 ASSEMBLY OF MECHANISM DECK ...

  • Page 3: General

    SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...

  • Page 4: Resetting The Unit

    – 4 –...

  • Page 5: Using The Rotary Commander

    – 5 –...

  • Page 6: Installation

    – 6 –...

  • Page 7: Connections

    – 7 –...
  • Page 8 – 8 –...
  • Page 9 – 9 –...

  • Page 10: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. COVER ASS’Y 1 claw 3 cover ass’y 2 three claws 1 claw FRONT PANEL ASS’Y 3 Push the bearing (L). 2 Push the bearing (R). 1 Push the button (OPEN). 4 front panel ass’y –...
  • Page 11 SUB PANEL ASS’Y 4 two claws 3 two screws (PTT2.6 × 8) 5 claw 1 screw 2 two screws (PTT2.6 × 8) (PTT2.6 × 8) 6 sub panel ass’y MECHANISM DECK (MG-25D-136) 1 two screws (2.6 × 6) 2 connector (CN201) 4 mechanism deck (MG-25D-136)
  • Page 12 HEAT SINK 6 heat sink 4 screw (PTT2.6 × 8) 3 three screws (PTT2.6 × 8) 2 two screws (PTT2.6 × 8) 1 three screws (PTT2.6 × 8) 5 screw (PTT2.6 × 8) MAIN BOARD 2 two ground point screws 1 ground point screw 3 main board 4 insulator...

  • Page 13: Assembly Of Mechanism Deck

    SECTION 3 ASSEMBLY OF MECHANISM DECK Note: Follow the assembly procedure in the numerical order given. 7 Holder the hanger by bending the claw. HOUSING 5 Fit projection on C part. 1 Install the catch to the hanger. 2 Install the hanger onto two claws of the housing.
  • Page 14 LEVER (LDG-A) / (LDG-B) shaft A shaft A shaft B shaft C shaft B 1 Fit the lever (LDG-A) on shafts A – C and install it. 3 type-E stop ring 2.0 2 Fit the lever (LDG-B) on shafts A and B and install it.
  • Page 15 GUIDE (C) 2 guide (C) 1 three claws – 15 –...

  • Page 16: Mechanical Adjustments

    SECTION 5 SECTION 4 ELECTRICAL ADJUSTMENTS MECHANICAL ADJUSTMENTS TEST MODE 1. Clean the following parts with a denatured-alcohol-moistened swab: This set have the test mode function. In the test mode, FM Auto playback head pinch roller Scan/Stop Level and MW Auto Scan/Stop Level adjustments can rubber belt capstan be performed easier than it in ordinary procedure.

  • Page 17: Tuner Section

    Dolby Level Adjustment TUNER SECTION 0 dB=1 µV Setting: [SHIFT] button : ON (light up SET UP and Cautions during repair PLAY MODE) When the tuner unit is defective, replace it by a new one be- Preset (PLAY MODE) button : NR off cause its internal block is difficult to repair.
  • Page 18 FM Stereo Separation Adjustment FM RDS S-Meter Adjustment Setting: Setting : [SOURCE] [SOURCE] button: FM button: FM FM RF signal FM RF signal level meter antenna jack (J10) generator generator antenna jack (J10) 0.01 µ F 4 Ω 0.01 µ F –...
  • Page 19 MW Auto Scan/Stop Level Adjustment Setting: → [SOURCE] [MODE] button: MW 30 Ω 15 pF 65 pF AM RF signal generator AM dummy antenna (50 Ω ) antenna jack (J10) Carrier frequency : 999 kHz 30% amplitude modulation by 1 kHz signal : 33 dB (44.7 µ...
  • Page 20 Adjustment Location: – SET UPPER VIEW – Tape Speed Adjustment TU10 RV1 MW Auto Scan/Stop Level Adjustment RV2 FM Auto Scan/Stop Level Adjustment RV4 FM Stereo Separation Adjustment RV241 RV231 (R-CH) (L-CH) RV110 FM RDS S-Meter Adjustment Dolby Level Adjustment –...

  • Page 21: Diagrams

    “L” is input for several 100 msec after power on, then it changes to “H” RDSCKI Serial data reading clock signal input from the RDS decoder (IC150) Battery detect signal input from the SONY bus interface (IC571) and battery check circuit BU IN “H”: battery on...
  • Page 22 Pin No. Pin Name Function Serial data reading clock signal input from the system controller (IC501) (for SONY bus) Serial data input from the SONY bus interface (IC571) Serial data output to the SONY bus interface (IC571) — Power supply terminal (+5V) AVDD —...
  • Page 23 Serial data transfer clock signal output to the tuner/tape deck system controller (IC101) and UNICKO SONY bus interface (IC571) Bus on/off control signal output to the tuner/tape deck system controller (IC101) and SONY bus BUSON interface (IC571) “L”: bus on...
  • Page 24 “L” is input for several 100 msec after power on, then it changes to “H” SIRCS Sircs signal input from the remote control receiver (IC702) Battery detect signal input from the SONY bus interface (IC571) and battery check circuit BU-IN “H”: battery on DOORSW Door open/close detect input “L”: door close...
  • Page 28 • Waveforms – PANEL Section – – MAIN Section – 1 IC10 @¢ (XIN) 1 IC701 @º (OSC-IN) 3.4 Vp-p 2 Vp-p 6.3 µ s 140 ns 2 IC101 8 (X1) 3.8 Vp-p 124 ns 3 IC150 !£ (OSCI) 6.5 Vp-p 230 ns 4 IC501 &º...

  • Page 29: Schematic Diagram - Main Section

    • IC Block Diagrams – MAIN Board – IC10 TB2114FN (EL) 24 23 21 20 14 13 RIPPLE FILTER – – SEEK/RECP SEEK/RECP 4BIT SWALLOW MODULAS COUNTER PRESCALER 12BIT PHASE PROGRAMABLE COMPARATOR COUNTER REFERENCE 40BIT 18BIT 20BIT COUNTER 22BIT SHIFT IF COUNTER 18BIT RESISTER...
  • Page 30 IC201 LB1638M IC210 CXA2510AQ-T4 N.C. OUT1 120µ/ 70µ + – MSMODE – OUT2 NR BIAS DRSW PBFB1 MODE PBRIN1 TAPE/AUX TAPESW PBREF1 N.C. INSW TAPE EQ PBFIN1 NRSW MODE FWD/RVS PBGND MS ON/ DETECT – MSOUT PBFIN2 PBREF2 DGND PBRIN2 PBFB2 MSTC OFF/B...
  • Page 31 IC571 BA8270F-E2 IC601 BA3918-V3 BUS ON BUS ON SWITCH REGULATOR RESET SWITCH BUS ON CLK IN BATTERY BATT BU IN SWITCH OVER VOLTAGE PROTECT VREF – DATA DATA IN DATA OUT 2 3 4 – 40 –...

  • Page 32: Exploded Views

    SECTION 7 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they are seldom required for routine service. Some may have some difference from the original one. delay should be anticipated when ordering •...

  • Page 33: Printed Wiring Boards - Panel Section

    (2) FRONT PANEL SECTION not supplied (KEY board) LCD701 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 3-010-985-11 BUTTON (+) (+ + )) * 62 3-023-221-01 ILLUMINATOR (LCD) 3-010-986-11 BUTTON (MODE) (*) * 63 3-023-162-01 PLATE (LCD), LIGHT GUIDE 3-010-987-11 BUTTON (–) (= 0 –) * 64 3-023-163-01 HOLDER (LCD)
  • Page 34 (3) MECHANISM DECK SECTION (MG-25D-136) HP901 M901 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-3291-667-A CLUTCH (FR) ASSY 3-933-346-01 CATCHER * 152 3-019-130-01 LEVER (LDG-A) 3-933-344-01 GUIDE (C) * 153 3-019-131-01 LEVER (LDG-B) 3-014-798-01 SCREW (HEAD), SPECIAL 3-020-539-01 SPRING (LD-1), TENSION 3-364-151-01 WASHER 3-020-540-01 SPRING (LD-2), TENSION...

  • Page 35: Schematic Diagram - Panel Section

    SECTION 8 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they When indicating parts by reference are seldom required for routine service. parts list may be different from the parts speci- number, please include the board.
  • Page 36 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R710 1-216-069-00 METAL CHIP 6.8K 1/10W < CAPACITOR > R711 1-216-045-00 METAL CHIP 1/10W 1-163-009-11 CERAMIC CHIP 0.001uF R712 1-216-045-00 METAL CHIP 1/10W 1-164-161-11 CERAMIC CHIP 0.0022uF 10% 100V R713 1-216-045-00 METAL CHIP...
  • Page 37 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-163-275-11 CERAMIC CHIP 0.001uF C305 1-126-157-11 ELECT 10uF (AEP, UK, SE) C306 1-124-465-00 ELECT 0.47uF 1-124-257-00 ELECT 2.2uF 1-124-234-00 ELECT 22uF C321 1-124-584-00 ELECT 100uF 1-163-031-11 CERAMIC CHIP 0.01uF C322 1-163-031-11 CERAMIC CHIP...
  • Page 38 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C702 1-136-165-00 FILM 0.1uF D501 8-719-914-44 DIODE DAP202K C703 1-136-165-00 FILM 0.1uF D551 8-719-040-04 DIODE MA721WK-(TX) C704 1-136-165-00 FILM 0.1uF D552 8-719-988-62 DIODE 1SS355 C705 1-136-165-00 FILM 0.1uF D553 8-719-105-99 DIODE RD6.2M-B1...
  • Page 39 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC210 8-752-079-79 IC CXA2510AQ-T4 Q656 8-729-120-28 TRANSISTOR 2SC1623-L5L6 IC301 8-752-078-67 IC CXA1946BQ-T6 Q657 8-729-027-23 TRANSISTOR DTA114EKA-T146 IC302 8-759-711-82 IC NJM4580E IC303 8-759-711-82 IC NJM4580E Q658 8-729-027-23 TRANSISTOR DTA114EKA-T146 IC404 8-759-711-82 IC NJM4580E Q731...
  • Page 40 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R117 1-216-065-00 RES,CHIP 4.7K 1/10W R344 1-216-089-00 RES,CHIP 1/10W R118 1-216-073-00 METAL CHIP 1/10W R401 1-216-077-00 METAL CHIP 1/10W R403 1-216-073-00 METAL CHIP 1/10W R121 1-216-097-00 RES,CHIP 100K 1/10W R404...
  • Page 41 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R655 1-216-073-00 METAL CHIP 1/10W < TUNER UNIT > R656 1-216-067-00 METAL CHIP 5.6K 1/10W TU10 A-3282-029-A TUX-006/2(E) (FM/AM TUNER UNIT) R657 1-216-097-00 RES,CHIP 100K 1/10W R658 1-216-675-11 METAL CHIP 0.5% 1/10W...
  • Page 42 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark PARTS FOR INSTALLATION AND CONNECTIONS ************** HARDWARE LIST ************************************** ************** 3-011-653-01 FRAME 7-621-772-30 SCREW +B 2X6 3-386-828-01 SCREW, FITTING 7-621-255-15 SCREW +P 2X3 * 503 3-358-697-01 BUSHING 7-685-793-09 SCREW +PTT 2.6X8 (S) 3-909-731-01 KEY 7-685-105-19 SCREW +P 2X8 TYPE2 NON-SLIT 3-012-213-21 COLLAR...
  • Page 43 XR-C7200R Sony Corporation 98B057549-1 9-925-790-11 Personal & Mobile Communication Company Printed in Hungary © 1998. 2 – 52 – Published by Quality Assurance Dept.

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