Sony XR-H594WG Service Manual
XR-H594WG
SERVICE MANUAL
Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol ; are trademarks of Dolby
Laboratories Licensing Corporation.
SPECIFICATIONS
E Model
Model Name Using Similar Mechanism XR-H592WG/H593WG
Tape Transport Mechanism Type MG-25H-136
FM tuner section
Frequency range (50 kHz space) 87.5 MHz – 108.0 MHz
Usable sensitivity 12.0 dBf (1.1 µV/75 ohms)
50 dB quieting sensitivity 25.0 dBf (4.9 µV/75 ohms)
Signal to Noise ratio (IHF T-200) 60 dB
Selectivity 80 dB
Stereo separation (1 kHz) 35 dB
AM tuner section
Frequency range (9 kHz space) 531 kHz – 1602 kHz
Usable sensitivity 28 dBµ
Cassette deck selection
Tape speed 4.76 cm/sec.
Wow & Flutter (WRMS) 0.08 %
Fast winding tirne (C-60) 100 sec.
Frequency response (±3 db, normal) 30 Hz – 20 kHz
Stereo separation 50 dB
Signal to Noise ratio 65 dB
Audio section
Maximum power output 20 W × 4
Total harmonic distortion 0.05 %
T one action Bass: ±12 dB (100 Hz)
Treble: ±12 dB (10 kHz)
General
Supply voltage 13.2 V DC (negative earth)
Maximum current 8.5 A (operating)
1.5 mA (standby)
Dimensions (width × length × depth) 180 × 52 × 160 mm
Weight 1.4 kg
Design and specifications are subject to change without
notice.
FM/AM CASSETTE CAR STEREO
1
TABLE OF CONTENTS
1. GENERAL
To Set the Clock ...................................................................... 3
Power ON/OFF........................................................................ 3
Volume Up/Down.................................................................... 4
Audio Control .......................................................................... 4
Auto Seek Tuning....................................................................5
Manual Tuning ........................................................................ 6
To Set the Preset Station ..........................................................6
Playing a Cassette....................................................................7
Fast Forward and Rewind........................................................ 7
TMS (Tape Music Sensor)....................................................... 8
Repeat Play .............................................................................. 8
Disc Play with CD Changer (Optional)...................................9
Track Selecting ........................................................................ 9
Disc Selecting ........................................................................10
2. DISASSEMBLY
2-1. Cover ................................................................................ 11
2-2. Front Panel Assy .............................................................. 11
2-3. Mechanism Deck Block ................................................... 12
2-4. Main Board ......................................................................12
3. ASSEMBLY OF MECHANISM DECK
3-1. Arm (Drive) Assy.............................................................13
3-2. Gear (LDG-D) ..................................................................13
3-3. Gear (LDG-B) .................................................................. 14
3-4. Gear Position Setting .......................................................14
3-5. Chassis (S) Assy............................................................... 15
3-6. Lever (Mode) ...................................................................15
3-7. Head Plate Assy ...............................................................16
3-8. Lever (Pinch) Assy ...........................................................16
3-9. Main Motor Assy .............................................................17
3-10. Flywheel (F) .....................................................................17
3-11. Belt (25)............................................................................ 18
3-12. Hanger ..............................................................................18
3-13. Housing ............................................................................ 19
3-14. Arm (Suction) Assy .......................................................... 19
3-15. Lever (LDG-A) ................................................................20
3-16. Lever (LDG-B)................................................................. 20
3-17. Gear (Loading FT) ...........................................................21
4. MECHANICAL ADJUSTMENTS...........................22
5. ELECTRICAL ADJUSTMENTS
Tape Section .........................................................................22
Tuner Section........................................................................23
6. DIAGRAMS
6-1. Block Diagram –Tape Section– .......................................27
6-2. Block Diagram –Tuner Section–...................................... 28
6-3. Block Diagram –Control Section– ...................................29
6-4. Printed Wiring Boards –Main Section– ...........................30
6-5. Schematic Diagram –Main Section (1/3)– .......................32
6-6. Schematic Diagram –Main Section (2/3)– .......................33
6-7. Schematic Diagram –Main Section (3/3)– .......................34
6-8. Schematic Diagram –Display Section–............................ 35
6-9. Printed Wiring Boards –Display Section– .......................36
6-10. IC Pin Description............................................................40
7. EXPLODED VIEWS
7-1. Chassis Section ................................................................42
7-2. Front Panel Section .......................................................... 43
7-3. Mechanism Deck Section (1) ...........................................44
7-4. Mechanism Deck Section (2) ...........................................45
7-5. Mechanism Deck Section (3) ...........................................46
8. ELECTRICAL PARTS LIST ...................................47
Notes on Chip Component Replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
2
SECTION 1
GENERAL
This section extracted
from instruction manual.
3
45678910
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. COVER
6 cover
5 claws
4 claws
1 P 2.6x6
2-2. FRONT PANEL ASSY
Note : When removing the LAMP board from the holder (B), take
care not to bend or break the claw of the holder.
2 CN802
0 front panel assy
claws
(holder (B))
3 screw (TP)
3 claws
2 P 2.6x8
1 LAMP board
5 claws
6 claws
9 CN800
4 screw (TP)
7 claws
8 claws
11
2-3. MECHANISM DECK BLOCK
6
4 CNP501
5 mechanism deck block
2 P2.6x6
3 CNP401
1 P 2.6x6
2-4. MAIN BOARD
4 MAIN board
3 P 2.6x6
1 P 2.6x
12
2 P 2.6x6
D
SECTION 3
ASSEMBLY OF MECHANISM DECK
Note : Follow the assembly procedure in the numerical order given.
3-1. ARM (DRIVE) ASSY
Part A
2 gear (LDG-FB)
(Align part A as
shown in the figure.)
1 arm (drive) assy
3-2. GEAR (LDG-D)
B
A
D
1 gear (LDG-D)
(Position A with B and C with
and install them.)
C
13
D
e
3-3. GEAR (LDG-B)
2 gear (LDG-B)
3 stopper washer
B
D
1 gear (LDG-E)
(Position A with B and C with
and install them.)
A
C
3-4. GEAR POSITION SETTING
• Align A with B.
• Align B with the hole in the chassis (S) assy.
• Align C with the hole in the chassis (S) assy.
• Face D to the rotary slide switch.
• Align E with F.
gear (LDG-FB)
A
B
gear (LDG-D)
gear (LDG-B)
C
gear (LDG-E)
D
switch, rotary slid
E
F
14
chassis (S) assy
)
3-5. CHASSIS (S) ASSY
1 chassis (S) assy
2 PS 2x4
3-6. LEVER (MODE)
• Align A of rotary slide switch with
B of lever (mode).
• Check that each of C through G
is put in the groove.
E
1 lever (mode)
A
C
F
G
B
D
2 lever (pinch selection
15
y
3-7. HEAD PLATE ASSY
1 head plate assy
• Insert A into B.
• Insert C into D.
2 step screw (HP)
C
3 step screw (HP)
A
3-8. LEVER (PINCH) ASSY
1 lever (pinch R) assy
• Insert A into B.
• Hook C to D.
2 washer (pinch)
D
5 P 2x2
D
A
E
B
4 head base retainer spring
4 washer (pinch)
3 lever (pinch F) ass
• Insert E into F.
• Hook G to H.
H
16
F
G
B
C
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