Instruction/ maintenance manual of the product XR-4803 Sony
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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.
– 2 – T ABLE OF CONTENTS 1. GENERAL ................................................................... 3 2. DISASSEMBL Y ......................................................... 9 3. ASSEMBL Y OF MECHANISM DECK ........... 11 4. MECHANICAL ADJUSTMENTS .
– 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 .
– 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.
– 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.
– 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.
– 13 – GUIDE (C) 2 guide (C) 1 three claws.
– 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.
– 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.
– 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.
– 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 sele.
– 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 .
– 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 UNI.
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– 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 2.
– 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.
– 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.
– 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) (+.
– 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-.
– 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.
– 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 .
– 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.
– 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.
– 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.
– 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.
– 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.
An important point after buying a device Sony XR-4803 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sony XR-4803 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sony XR-4803 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sony XR-4803 you will learn all the available features of the product, as well as information on its operation. The information that you get Sony XR-4803 will certainly help you make a decision on the purchase.
If you already are a holder of Sony XR-4803, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sony XR-4803.
However, one of the most important roles played by the user manual is to help in solving problems with Sony XR-4803. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sony XR-4803 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
