Sony TC-WR720A Service Manual - Page 3

Tc-wr720/wr720a, Sony®

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-MODEL IDENTIFICATION(Specification Label) TC-W720: AEP, WG (West Germany) model SONY® MODEL NO. TC-WR720 STEREO CASSETTE DECK AC 220V - 50/60Hz TC-WR720A: US, Canadian, E model SONY® MODEL NO. TC-WR720A STEREO CASSETTE DECK US, Canadian model: AC 120V 60Hz 33W E model: AC 120, 220, 240V - 50/60Hz 33W TC-WR720/WR720A TABLE OF CONTENTS Section Title Page 1. GENERAL 1-1. Location and Function of Controls 4 2. DISASSEMBLY 2-1. Front Panel (WR720A) 5 2-2. Mechanism Deck (WR720A) 5 2-3. Front Panel (WR720) 6 2-4. Mechanism Deck (WR720) 6 2-5. Capstan Motor, Reel Motor (1) 7 2-6. Capstan Motor, Reel Motor (2) 7 2-7. Head, Pinch Roller 7 3. MECHANICAL ADJUSTMENTS 8 4. ELECTRICAL ADJUSTMENTS 8 5. DIAGRAMS 5-1. Circuit Boards Location 12 5-2. Semiconductor Lead Layouts 13 5-3. Printed Wiring Boards -Main Section- 14 5-4. Schematic Diagram -Audio/Power Section- 19 5-5. Schematic Diagram -System Control Section- .23 5-6. Schematic Diagram -Panel Section- 27 5-7. Printed Wiring Boards -Panel Section- 28 6. EXPLODED VIEWS 6-1. Chassis Section 30 6-2. Front Panel Section (WR720A) 31 6-3. Front Panel Section (WR720) 32 6-4. Mechanism Section-1 33 6-5. Mechanism Section-2 34 7. ELECTRICAL PARTS LIST 35

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TC-WR720/WR720A
-MODEL
IDENTIFICATION
-
(Specification
Label)
TC-W720:
AEP,
WG
(West
Germany)
model
SONY®
MODEL
NO.
TC-WR720
STEREO
CASSETTE
DECK
AC
220V
-
50/60Hz
TC-WR720A:
US,
Canadian,
E
model
SONY®
MODEL
NO.
TC-WR720A
STEREO
CASSETTE
DECK
US,
Canadian
model
:
AC
120V
60Hz
33W
E
model
:
AC
120,
220,
240V
-
50/60Hz
33W
TABLE
OF
CONTENTS
Section
Title
Page
1.
GENERAL
1-1.
Location
and
Function
of
Controls
4
2.
DISASSEMBLY
2-1.
Front
Panel
(WR720A)
5
2-2.
Mechanism
Deck
(WR720A)
5
2-3.
Front
Panel
(WR720)
6
2-4.
Mechanism
Deck
(WR720)
6
2-5.
Capstan
Motor,
Reel
Motor
(1)
7
2-6.
Capstan
Motor,
Reel
Motor
(2)
7
2-7.
Head,
Pinch
Roller
7
3.
MECHANICAL
ADJUSTMENTS
8
4.
ELECTRICAL
ADJUSTMENTS
8
5.
DIAGRAMS
5-1.
Circuit
Boards
Location
12
5-2.
Semiconductor
Lead
Layouts
13
5-3.
Printed
Wiring
Boards
—Main
Section—
14
5-4.
Schematic
Diagram
—Audio/Power
Section—
19
5-5.
Schematic
Diagram
—System
Control
Section—
.23
5-6.
Schematic
Diagram
—Panel
Section—
27
5-7.
Printed
Wiring
Boards
—Panel
Section—
28
6.
EXPLODED
VIEWS
6-1.
Chassis
Section
30
6-2.
Front
Panel
Section
(WR720A)
31
6-3.
Front
Panel
Section
(WR720)
32
6-4.
Mechanism
Section
-1
33
6-5.
Mechanism
Section
-2
34
7.
ELECTRICAL
PARTS
LIST
35