Sony WX-4500X Installation/Connections User manual

1
CD player section
Signal-to-noise ratio 92 dB
Frequency response 10 – 20,000 Hz
Wow and flutter Below measurable limit
Laser Diode Properties
Material GaAlAs
Wavelength 780 nm
Emission Duration Continuous
Laser output power Less than 44.6 µW*
*This output is the value measured at a distance
of 200 mm from the objective lens surface on
the Optical Pick-up Block.
Cassette player section
Tape track 4-track 2-channel stereo
Wow and flutter 0.08 % (WRMS)
Frequency response 30 – 18,000 Hz
Signal-to-noise ratio
Cassette type Dolby B NR Dolby NR off
TYPE II, IV 67 dB 58 dB
TYPE I 64 dB 55 dB
SERVICE MANUAL
US Model
WX-4500X
CHANGER CONTROL AUDIO MASTER
SPECIFICATIONS
– Continued on next page –
Dolby noise reduction manufactured under license from Dolby Labo-
ratories Licensing Corporation.
“DOLBY” and the double-D symbol ;are trademarks of Dolby
Laboratories Licensing Corporation.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.
Tuner section
FM
Tuning range FM tuning interval:
50 kHz/200 kHz switchable
87.5 – 108.0 MHz
(at 50 kHz step)
87.5 – 107.9 MHz
(at 200 kHz step)
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
70 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.4% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
Ver 1.1 2002. 10
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
9-873-326-02
2002J0400-1
© 2002. 10
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-318RW/
A-153
Optical Pick-up Name RAF0143A
Model Name Using Similar Mechanism WX-C55
Tape Transport Mechanism Type MG-25E-136
CD
Section
TC
Section

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SERVICE NOTE
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown and also use
the procedure in the printed matter which is included in the repair
parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission, ob-
serve from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARD
The pick-up flexible board in this set is secured to the optical pick-
up with an adhesive tape. Once the tape is removed, an adhering
force becomes weak, and it cannot be reused.
Therefore, if the optical pick-up is replaced, replace also the pick-
up flexible board with a new one.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.
AM
Tuning range AM tuning interval:
9 kHz/10 kHz switchable
531 - 1,602 kHz
(at 9 kHz step)
530 – 1,710 kHz
(at 10 kHz step)
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity 30 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 – 8 ohms
Maximum power output 50 W ×4 (at 4 ohms)
General
Outputs Audio output
Subwoofer outout (mono)
Power antenna relay
control lead
Power amplifier control
lead
Inputs Telephone ATT control lead
Illumination control lead
BUS control input
connector
BUS audio input connector
Remote controller input
connector
Antenna input connector
Tone controls Bass ±10 dB at 62 Hz
Treble ±10 dB at 16 kHz
Loudness +8 dB at 100 Hz
+2 dB at 10 kHz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 ×100 ×186 mm
(7 1/8 ×4 ×7 3/8 in.)
(w/h/d)
Mounting dimension Approx. 178 ×100 ×165 mm
(7 1/8 ×4 ×6 1/2 in.)
(w/h/d)
Mass Approx. 2.1 kg (4 lb. 10 oz.)
Supplied accessories Parts for installation and
connections (1 set)
NOTE
This unit cannot be connected to a digital preamplifier
or an equalizer.
Design and specifications are subject to change without
notice.
WX-4500X

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TABLE OF CONTENTS
1. GENERAL
Location of Controls............................................................... 4
Getting Started........................................................................ 5
CD Player ............................................................................... 5
Cassette Player ....................................................................... 6
Radio ...................................................................................... 6
Other Functions ...................................................................... 7
Connections ............................................................................ 9
2. DISASSEMBLY
2-1. Front Panel Assy .............................................................. 11
2-2. CD Mechanism Block ...................................................... 12
2-3. CD Main Board ................................................................ 12
2-4. Tension Spring (FL) ......................................................... 13
2-5. Floating Block Assy ......................................................... 13
2-6. Roller Arm Assy ............................................................... 14
2-7. Optical Pick-up Assy........................................................ 14
2-8. Chassis (Top) Assy ........................................................... 15
2-9. Main Board ...................................................................... 15
2-10. Heat Sink .......................................................................... 16
2-11. Tape Mechanism Block .................................................... 16
3. ASSEMBLY OF MECHANISM DECK
3-1. Housing ............................................................................ 17
3-2. Arm (Suction)................................................................... 17
3-3. Lever (LDG-A)/(LDG-B) ................................................ 18
3-4. Gear (Loading FT) ........................................................... 18
3-5. Guide (U) ......................................................................... 19
3-6. Main Motor Assy ............................................................. 19
4. MECHANICAL ADJUSTMENTS .............................. 20
5. ELECTRICAL ADJUSTMENTS
Tape Section ......................................................................... 20
6. DIAGRAMS
6-1. IC Pin Descriptions .......................................................... 22
6-2. Block Diagram –CD Section–.......................................... 26
6-3. Block Diagram –Tuner Section– ...................................... 27
6-4. Block Diagram –Tape Section– ....................................... 28
6-5. Circuit Boards Location ................................................... 29
6-6. Printed Wiring Boards –CD Mechanism Section–........... 30
6-7. Schematic Diagram –CD Mechanism Section – .............. 31
6-8. Printed Wiring Board –Main Section– ............................. 32
6-9. Schematic Diagram –Main Section (1/3)– ....................... 34
6-10. Schematic Diagram –Main Section (2/3)– ....................... 35
6-11. Schematic Diagram –Main Section (3/3)– ....................... 36
6-12. Printed Wiring Board –Jog Section–................................ 37
6-13. Printed Wiring Board –Display Section– ......................... 38
6-14. Schematic Diagram –Display, Jog Section– .................... 40
7. EXPLODED VIEWS
7-1. Cover Section ................................................................... 46
7-2. Front Panel Section .......................................................... 47
7-3. Main Board Section ......................................................... 48
7-4. CD Mechanism Section (1) .............................................. 49
7-5. CD Mechanism Section (2) .............................................. 50
7-6. Tape Mechanism Section ................................................. 51
8. ELECTRICAL PARTS LIST ................................... 52
WX-4500X

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WX-4500X SECTION 1
GENERAL This section extracted from
instruction manual.

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WX-4500X

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WX-4500X

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WX-4500X

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WX-4500X

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WX-4500X
Connections

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WX-4500X

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WX-4500X
SECTION 2
DISASSEMBLY
Note : This set can be disassemble according to the following sequence.
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL ASSY
Set Front Panel Assy CD Mechanism Block
Main Board Heat Sink
Floating Block Assy Roller Arm Assy
Optical Pick-up Assy
Tape Mechanism Block
CD Main Board Tension Spring (FL)
Chassis (Top) Assy
1 PTT 2.6x6
2 PTT 2.6x6
3 cla
w
4 claw
5 CN901
6 panel assy, front

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WX-4500X
6 CD MAIN board
4 M 2x3.0
5 M 2x3.0
1 CNP10
2
2 CNJ102
claw
3 CNJ103
1 PTT 2.6x6
2 PTT 2.6x6
6 PTT 2.6x6
7 bracket (MD
)
3 PTT 2.6x6
4 CD mechanism block
5 CNJ101
2-2. CD MECHANISM BLOCK
2-3. CD MAIN BOARD

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WX-4500X
1 washer (M)
3 lever (LE.L)
4 spring (SPM), tension
5 spring (angle), tension
6 Fit lever in the
direction of the arrow.
0 floating block ass
y
7 shaft
8 shaft
9 shaft
2
1 spring (FL), tension
2 spring (FL), tension
2-4. TENSION SPRING (FL)
2-5. FLOATING BLOCK ASSY

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WX-4500X
6 pick-up assy, optical
1 gear (woam wheel)
2 shaft (sled guide)
3 cover (P)
4 PTP 1.7x4
5 rack (feed)
3 Fit lever in the
direction of the arrow.
1 spring (roller)
6 arm assy, roller
4 shaft
5 shaft
2 spring (roller)
2-6. ROLLER ARM ASSY
2-7. OPTICAL PICK-UP ASSY

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WX-4500X
1 PTT 2.6x10
2 PTT 2.6x6, ground point
3 MAIN board
4 CN450
1 PTT 2.6x
6
2 PTT 2.6x6
3 CN400
4 connector
5 chassis (TOP) assy
projection
projection
2-8. CHASSIS (TOP) ASSY
2-9. MAIN BOARD

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WX-4500X
2 PTT 2.6x5
3 tape mechaniam block
1 PTT 2.6x5

1 PTT 2.6x10
2 PTT 2.6x10
3 PTT 2.6x10
5 PTT 2.6x10
6 heat sink
4 BTP 2.6x8
2-10. HEAT SINK
2-11. TAPE MECHANISM BLOCK

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WX-4500X
2 Move the arm (suction) in the arro
w
Direction and fit on projection.
1 Fit the arm (suction) on the shaft.
projection
SECTION 3
ASSEMBLY OF MECHANISM DECK
Note : Follow the assembly procedure in the numerical order given.
3-1. HOUSING
3-2. ARM (SUCTION)
7 Holder the hanger by bending the claw.
1 Install the catcher to the hanger.
2 Install the hanger onto
two claws of the housing.
3 Put the housing
under
A part.
6 Fit projection on D part.
4 Fit claw on B part.
5 Fit projection on C part.
8 Hold the hanger by
bending the claw.
hanger
housing
D part
head
C part
B part
A part
Head, Housing Arm (Suction)
Guide (U) Main Motor Assy
Lever (LDG-A) / (LDG-B) Gear (Loading FT)
Note : This set can be assemble according to the following sequence.

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WX-4500X
3-3. LEVER (LDG-A) / (LDG-B)
3-4. GEAR (LOADING FT)
1 Fit the lever (LDG-A) on
shafts
A to C and install it.
2 Fit the lever (LDG-B) on
shafts
A and B and install it.
3 type-E stop ring 2.0
shaft
A
shaft C
shaft A
shaft B
shaft B
5 Align hole in the gear (LDG-D)
with hole the lever (LDG-A).
4 Move the lever (LDG-B)
in the arrow direction.
2 tension spring (LD-2)
1
3
tension spring (LD-1)
7 polyethylene washer
6 gear (loading FT)
gear (LDG-D)
gear (LDG-FB)
lever (LDG-A)
hole
hole

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WX-4500X
3-5. GUIDE (U)
3-6. MAIN MOTOR ASSY
1 claws
2 guide (C)
3 belt (25)
2 precision screws P 2x2
1 main motor assy
(CAPSTAN/REEL) (M904
)
30 °

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WX-4500X
set
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
SP OUT
4
Ω
PRECAUTION
1. Wipe the following components with an absorbent cotton cloth
moistened with alcohol before adjustment :
PB head Pinch roller
Idler Rubber belt
Capstan
2. Demagnetize the PB head using a head demagnetizer.
3. Be careful not to use a magnetized screwdriver.
4. After the adjustment is completed, lock the adjustment parts
using screws.
5. Unless otherwise specified, make adjustments at the specified
voltage (14.4 V).
Torque Measurement
Mode Torque Meter Meter Reading
2.95 –6.37 mN •m
FWD (30 –65 g •cm)
CQ-102C (0.42 –0.90 oz •inch)
FWD 0.05 –0.44 mN •m
Back Tension (0.5 –4.5 g •cm)
(0.01 –0.06 oz •inch)
2.95 –6.37 mN •m
REV (30 –65 g •cm)
CQ-102RC (0.42 –0.90 oz •inch)
REV 0.05 –0.44 mN •m
(0.5 –4.5 g •cm)
Back Tension (0.01 –0.06 oz •inch)
5.88 –19.61 mN •m
FF, REW CQ-201B (60 –200 g •cm)
(0.83 –2.78 oz •inch)
Tape Tension Measurement
Mode Tension Meter Meter Reading
FWD CQ-403A more than 90 g
REV CQ-403R (more than 3.17 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
SECTION 4
MECHANICAL ADJUSTMENTS
TAPE SECTION
Tape Speed Adjustment
Mode : FWD play
0 dB = 0.775 V
Tape Speed Adjustment
-Tape Mechanism Block upper side-
•Adjustments of the tuner and CD sections have auto adjustments
in this set.
Test tape
Type Signal Use
WS-48A 3 kHz, 0 dB Tape speed adjustment
P-4-D400 400 Hz, 0 dB Dolby level adjustment
Procedure:
1. Playback the test tape in the FWD play mode.
2. Verify that the reading on the digital frequency counter is in the
range between 3,010 and 3,300 Hz at the top of tape.
3. If the specified value is not met, adjust the variable resistor on
the capstan motor so that the reading is 3,000 Hz at the FWD
top of tape.
Adjustment Location :