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Sony TC-WE475 Service Manual

Sony TC-WE475
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Model Name Using Similar Mechanism TC-WE435
DECK A TCM-230ASR41A
DECK B TCM-230ASR41B
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
STEREO CASSETTE DECK
SPECIFICATIONS
Dolby noise reduction extension manufactured under license
from Dolby Laboratories Licensing Corporation.
HX Pro originated by Bang & Olufsen. “DOLBY”, the double-D
symbol ; and “HX PRO” are trademarks of Dolby Laboratories
Licensing Corporation.
TC-WE475
— Continued on next page —
Transport Mechanism Type
Ver. 1.7 2006.02
Sony Corporation
Home Audio Division
Pubulished by Sony Techno Create Corporation
9-873-893-18
2006B02-1
© 2006.02
SERVICE MANUAL
System
Fast-winding time
Approx.100 sec. (with Sony C-60 cassette)
Signal-to-noise ratio (at peak level and weighted with Dolby
NR off)
55 dB, using Sony TYPE I cassette
57 dB, using Sony TYPE II cassette
58 dB, using Sony TYPE IV cassette
S/N ratio improvement
With Dolby B NR on:
Approx. 5 dB at 1 kHz, 10 dB at 5 kHz
With Dolby C NR on:
Approx. 15 dB at 500 Hz, 20 dB at 1 kHz
Harmonic distortion
0.4% (using Sony TYPE Icassette):
160 nWb/m 315 Hz, 3rd H.D.)
1.8% (using Sony TYPE IV cassette):
250 nWb/m 315 Hz, 3rd H.D.)
Frequency response (DOLBY NR OFF)
30-16,000 Hz (±3 dB, IEC), 20-17,000 Hz
(±6 dB), using Sony TYPE I cassette
30-17,000 Hz (±3 dB, IEC), 20-18,000 Hz
(±6 dB), using Sony TYPE II cassette
30-19,000 Hz (±3 dB, IEC), 20-20,000 Hz
(±6 dB), 30-13,000 Hz (±3 dB, –4dB recording),
using Sony TYPE IV cassette
Wow and flutter
±0.15% W. Peak (IEC)
0.1% W. RMS (NAB)
±0.2% W. Peak (DIN)
Variable pitch range
Approx. –30 to +30 %
Inputs
Line inputs (phono jacks)
sensitivity 0.16 V, input impedance 47 kilohms
Outputs
Line outputs (phono jacks)
rated output level 0.5 V at a load impedance of
47 kilohms, load impedance over 10 kilohms
Headphones (stereo phone jack)
output level 0.25 mW at a load impedance of
32 ohms
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Sony TC-WE475 Specifications

General IconGeneral
Tape Speed4.8 cm/s
MotorDC servo motor
InputLine in
TypeDouble Cassette Deck
Wow and Flutter0.08% (WRMS)
OutputLine out
Power Supply120V AC, 60Hz
Dimensions430 x 125 x 285 mm (W x H x D)
Heads2 x Playback, 2 x Record, 2 x Erase

Summary

SPECIFICATIONS

SAFETY CHECK-OUT PROCEDURES

AC Leakage Measurement

Procedures and limits for measuring AC leakage from exposed metal parts.

GENERAL INFORMATION AND CONTROLS

Location of Parts and Controls

Identifies and locates all controls and indicators on the front panel.

DISASSEMBLY PROCEDURES

SERVICE MODE OPERATION

KEY CHECK & DISPLAY CHECK MODE

How to enter and use the service mode for testing.

ADJUSTMENTS

Electrical Adjustments - Test Tapes and Modes

Lists tapes, test modes, and general precautions for electrical adjustments.

Head Azimuth Adjustment

Procedure for aligning the head for optimal playback.

Tape Speed Adjustment

Steps to adjust the tape playback speed.

Playback Level Adjustment

Procedure to set the correct playback audio levels.

Bias Adjustments

Procedures for bias consumption current and record bias adjustments.

Record Level Adjustment

Procedure for setting the recording audio level.

SCHEMATICS AND DIAGRAMS

EXPLODED VIEWS

ELECTRICAL PARTS LIST

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