JVC MF-47L - Table of Contents

MF-47L/ML
Contents
Page
Cautions for Safety Assurance...........-e00005 2
Specification .. 1... 0.0. 0c eee ee eee 3
Feat ress nc soi ee aie wi Riess ie eect ah aia eee 8 3
New Technical Information
— FM pre-set tuning circuit— ............... 3
Name of External Parts... ......0-00 20 eee cence 5
Disassembly Instruction... ........00cceeeuee 6
Record Player Adjustment ...........000 200 es 7
Removal of Cassette Deck Mechanism............ 8
Check Point After Replacement of Rotation Parts.... 9
Head Replacement and Adjustment ............. 9
Cassette Deck Circuit Board Adjustment.......... 10
Tuner Alignment. ........0200 cece eee eens 11
How to Engage Dial String ..........0.020008- 13
Wiring Diagram of Power Source Part ............ 13
Block Diagram ... 2.0.0.0 eet eee eee 14
Exploded View of Cassette Mechanism ........... 15
Cassette Mechanism Parts List...........2.006 16
Exploded View of Record Player Mechanism
& Main Service Parts List... 0.0... 0. ee eee eee 17
Exploded View of Environment Parts............ 18
Installation of Front Panel Inside (1)..........-. 18
Page
Installation of Front Panel Inside (2)............. 19
Aspect & Attachment Parts List..............0.. 20
Circuit Boards Diagrams & Parts List............. 21
Tuner Circuit Board. ............200000aee 22
Tuner Circuit Board Parts List..............- 23
Cassette Amp. Circuit Board ................ 24
Cassette Amp. Circuit Board Parts List ......... 25
Control Amp. Circuit Board ..............05 26
Control Amp. Circuit Board Parts List.......... 26
Power Amp. Circuit Board Parts List........... 26
Power Supply Circuit Board Parts List.......... 26
Power Amp. Circuit Board ............00005 27
Other Parts (AC power input circuit parts
& Accessory parts)... 0.0.0.0. 00 e eee eae 27
Characteristics of Transistors... .........0.0 00005 28
Transistor and IC Lead Identification ............ 28
Schematic Diagram ....... 0.00000 eee ee eee 31
Tuner Circuit... 2... eee ee ee ee 31
Control Amplifier... .......0.00 000 eee ees 32
Cassette Circuit... ......... 00: cee nee eae 33
Power Source & Amplifier...............0005 34
Cautions for Safety Assurance at the Service
Cautions for safety assurance at the service
In order to prevent from accidents, like fire or shock
hazard, please keep the following points for the safety.
1. The parts marked with A\ in the list of this manual are
safety assurance parts.
When replacing this kind of parts, make sure to use the
specified one.
2. Although in case of replacing the other kind of parts
than A\ mark, it is recommended to use the parts listed
in this manual to keep appliance safe and reliable.
3. When wire connection is made, solder the connecting
part after winding the wire round the terminal more
than half turn in order to prevent easy disconnection.
No. 7011
4. When replacing the parts in the circuit marked in the
schematic diagrams use only the fisted parts in this
manual. The marked circuit :
. The symbol mark[oow-lis showing a fusible resistor,
please use the listed parts.
. The heat radiating parts (resistor, transistor, etc.) should
be spaced enough from printed circuit board, plastics
or another electrical parts to be free from its heat.
Some parts may radiate big heat when transistor or
circuitry has been damaged.
. When altered the working voltage or frequency of the
appliance make sure to specify it on the appliance and
its carton case.
a
Soldering
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