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Sony XR-4803 manual

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Table of contents for the manual

  • Page 1

    MICROFILM SERVICE MANUAL FM/MW/L W CASSET TE CAR STEREO East European Model Model Name Using Similar Mechanism NEW T ape T ranspor t Mechanism T ype MG-25F-136 SPECIFICA TIONS XR-4803 – Continued on ne xt page –[...]

  • Page 2

    – 2 – T ABLE OF CONTENTS 1. GENERAL ................................................................... 3 2. DISASSEMBL Y ......................................................... 9 3. ASSEMBL Y OF MECHANISM DECK ........... 11 4. MECHANICAL ADJUSTMENTS ....................... 14 5. ELECTRICAL ADJUSTMENTS T est Mode ............................[...]

  • Page 3

    – 3 – SECTION 1 GENERAL This section is e xtracted from instruction manual.[...]

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    – 9 – FRONT P ANEL ASS’Y CO VER ASS’Y Note: Follow the disassemb ly procedure in the numerical order giv en. SECTION 2 DISASSEMBL Y 2 Remov e the front panel ass’y to the direction of the arrow A . A 1 Push the button (release). 1 3 cov er ass’y 2 2 2 1 1[...]

  • Page 10

    – 10 – SUB P ANEL, MECHANISM DECK (MG-25F-136) MAIN BO ARD, HEA T SINK 1 three screws (PTT2.6 × 8) 1 three screws (PTT2.6 × 8) 3 connector (CN351) 4 flexib le flat cab le (CN301) 2 sub panel 6 mechanism dec k (MG-25F-136) 5 screw (PTT2.6 × 6) 1 two screws (PTT2.6 × 8) 2 rubber cap (25) 6 heat sink 5 screw (PTT2.6 × 8) 1 screw (PTT2.6 × 8)[...]

  • Page 11

    – 11 – HOUSING ARM (SUCTION) Note: Follow the assembly procedure in the n umerical order giv en. SECTION 3 ASSEMBL Y OF MECHANISM DECK A par t C par t B par t D par t 8 Hold the hanger by bending the claw . 6 Fit projection on D par t. 4 Fit claw on B par t. 3 Put the housing under A par t. 5 Fit projection on C par t. 1 Install the catch to th[...]

  • Page 12

    – 12 – LEVER (LDG-A) / (LDG-B) GEAR (LDG-FT) shaft A shaft B shaft C 1 Fit the lev er (LDG-A) on shafts A – C and install it. shaft A shaft B 2 Fit the lev er (LDG-B) on shafts A and B and install it. 3 type-E stop ring 2.0 gear (LDG-D) 5 gear (LDG-FT) 6 polyeth ylene w asher 2 tension spring (LD-2) 2 tension spring (LD-1) gear (LDG-FB) lev e[...]

  • Page 13

    – 13 – GUIDE (C) 2 guide (C) 1 three claws[...]

  • Page 14

    – 14 – SECTION 4 MECHANICAL ADJUSTMENTS Mode T ension Meter Meter Reading Forward CQ-403A more than 90 g (more than 3.18 oz) Rev erse CQ-403R more than 90 g (more than 3.18 oz) • T ape T ension Measurement 1. Clean the following parts with a dena tured-alcohol-moistened swab: playback head pinch roller rubber belt capstan idler 2. Demagnetize[...]

  • Page 15

    – 15 – TUNER SECTION 0 dB=1 µV Cautions during repair When the tuner unit is defectiv e, replace it by a ne w one be- cause its internal block is diff icult to repair . Note: Adjust the tuner section in the sequence sho wn belo w . 1. FM Auto Scan/Stop Le vel Adjustment. 2. FM Stereo Separation Adjustment. 3. AM (MW) Auto Scan/Stop Le v el Adj[...]

  • Page 16

    – 16 – AM (MW) A uto Scan/Stop Le vel Adjustment Make this adjustment after “FM Auto Scan/Stop Le vel Adjustment”. Setting: [SOURCE] and [MODE] button: MW Procedur e: 1. Set to the test mode. (See page 14.) 2. Push the [SOURCE] b utton and set to FM. 3. Push the [MODE] button and set to MW . Display 4. Adjust with the volume R V1 on TU1 so [...]

  • Page 17

    – 17 – 6-1. IC PIN FUNCTION DESCRIPTION SECTION 6 DIA GRAMS • MAIN BOARD IC501 µ PD17707GC-529-3B9 (SYSTEM CONTROLLER) Pin No. Pin Name I/O Function 1 AMSSEL I Setting terminal for the AMS selection fixed at “L” 2 POS3 I 3 POS2 I 4 POS0 I 5 POS1 I 6 TAPEON O Tape system power supply on/off control signal output terminal “H”: tape on [...]

  • Page 18

    – 18 – Pin No. Pin Name I/O Function 41 KEYACK I Input of acknowledge signal for the key entry Acknowledge signal is input to accept function and eject keys in the power off status On at input of “L” 42 BU IN I Battery detect signal input terminal “H”: battery on 43 MTLSEL I/O 44 DOLON I/O 45 AMSIN I Whether a music is present or not fr[...]

  • Page 19

    – 19 – Pin No. Pin Name I/O Function 69 UNISO O Serial data output terminal for the unilink Not used (open) 70 UNISI I Serial data input terminal for the unilink Not used (fixed at “L”) 71 UNICKO O Serial data transfer clock signal output terminal for the unilink Not used (connected to pin ^• ) 72 BUSON O Bus on/off control signal output [...]

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  • Page 23

    – 31 – • IC Block Diagrams – MAIN Boar d – IC301 CXA2509A Q-T4 IC331 LC75373ED IC351 MM1322XFBE + – + – + – + – + – 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 21 22 23 26 27 28 29 30 31 32 33 34 37 38 39 40 24 25 PBFB1 PBRIN1 PBREF1 PBFIN1 35 36 PBGND VCT PBFIN2 PBREF2 PBRIN2 PBFB2 PBEQ1 PBOUT1 VCC TAPEIN1 AUXIN1 MSLPF L[...]

  • Page 24

    – 32 – IC611 BA3918-V2 + – + – + – + – OVER VOLTAGE PROTECT REGULATOR 1 2 3 4 5 6 7 8 9 10 12 11 NC MODE2 MODE1 STB VDD AMP VCC ANT COM AM FM GND[...]

  • Page 25

    – 33 – SECTION 7 EXPLODED VIEWS • Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. • The mechanical parts with no reference num- ber in the exploded vie ws are not supplied. • Har dware (# mark) list and accessories and packing materials ar[...]

  • Page 26

    – 34 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark (2) FR ONT P ANEL SECTION 101 3-018-799-01 BUTTON (D-BASS) 102 3-015-036-01 CUSHION (BACK P ANEL) 103 3-016-924-01 BUTTON (L) (2) (+. –) 104 3-009-304-01 BUTTON (RELEASE) 105 3-932-475-01 SPRING (RELEASE) * 106 3-019-149-01 PLA TE, LCD 107 X-3374-689-1 PANEL SUB [...]

  • Page 27

    – 35 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark (3) MECHANISM DECK SECTION (MG-25F-136) 151 A-3291-667-A CLUTCH (FR) ASSY * 152 3-019-130-01 LEVER (LDG-A) * 153 3-019-131-01 LEVER (LDG-B) 154 3-020-539-01 SPRING (LD-1), TENSION 155 3-020-540-01 SPRING (LD-2), TENSION 156 3-020-542-01 GEAR (LOADING FT) 157 3-341-[...]

  • Page 28

    – 36 – SECTION 8 ELECTRICAL P ARTS LIST Ref. No. Part No. Description Remark NO TE: • Due to standardization, replacements in the parts list may be different fr om the par ts speci- fied in the diagrams or the components used on the set. • -XX and -X mean standardiz ed parts, so they may hav e some difference fr om the original one. • RES[...]

  • Page 29

    – 37 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R956 1-216-049-11 RES, CHIP 1K 5% 1/10W R962 1-216-025-00 RES, CHIP 100 5% 1/10W R963 1-216-033-00 MET AL CHIP 220 5% 1/10W R964 1-216-035-00 MET AL CHIP 270 5% 1/10W R965 1-216-035-00 MET AL CHIP 270 5% 1/10W R967 1-216-035-00 MET AL CHIP 270 5% 1/10W R968 1-216-0[...]

  • Page 30

    – 38 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C358 1-163-251-11 CERAMIC CHIP 100PF 5% 50V C359 1-164-489-11 CERAMIC CHIP 0.22uF 10% 16V C501 1-163-235-11 CERAMIC CHIP 22PF 5% 50V C502 1-163-234-11 CERAMIC CHIP 20PF 5% 50V C503 1-124-584-00 ELECT 100uF 20% 10V C504 1-164-004-11 CERAMIC CHIP 0.1uF 10% 25V C505 1[...]

  • Page 31

    – 39 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark JC151 1-216-296-00 SHORT 0 JC161 1-216-295-00 SHORT 0 JC162 1-216-295-00 SHORT 0 JC163 1-216-296-00 SHORT 0 JC251 1-216-296-00 SHORT 0 JC301 1-216-295-00 SHORT 0 JC302 1-216-295-00 SHORT 0 JC303 1-216-295-00 SHORT 0 JC304 1-216-296-00 SHORT 0 JC331 1-216-296-00 SHO[...]

  • Page 32

    – 40 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R282 1-216-073-00 MET AL CHIP 10K 5% 1/10W R283 1-216-081-00 MET AL CHIP 22K 5% 1/10W R284 1-216-129-00 MET AL CHIP 2.2M 5% 1/10W R285 1-216-089-00 RES, CHIP 47K 5% 1/10W R286 1-216-033-00 MET AL CHIP 220 5% 1/10W R301 1-216-079-00 MET AL CHIP 18K 5% 1/10W R302 1-2[...]

  • Page 33

    – 41 – Ref. No. Part No. Description Remark ************** HARDWARE LIST ************** #1 7-621-772-10 SCREW +B 2X4 #2 7-685-793-09 SCREW +PTT 2.6X8 (S) #3 7-685-792-09 SCREW +PTT 2.6X6 (S) #4 7-685-794-09 SCREW +PTT 2.6X10 (S) #5 7-685-106-19 SCREW +P 2X10 TYPE2 NON-SLIT #6 7-624-104-04 STOP RING 2.0, TYPE-E #7 7-627-553-17 PRECISION SCREW +P[...]

  • Page 34

    – 42 – XR-4803 Sony Corporation Per sonal & Mobile Communication Compan y 9-925-681-11 98A05076-1 Printed in Japan © 1998. 1 Published by Quality Assurance Dept.[...]