Sony TCD 905 Service Manual

Page 1

TC-DQDS

SERVICE MANUAL

AEP Model
UK Model
E Model

NEW
DECK A TCM-190RA11
DECK B TCM-19ORB13

Model Name Using Similar Mechanism

Tape Transport Mechanism Type

SPEClFlCATIONS

Recording system 4-track 2-channel stereo Outputs
Fast-forward and rewind time

Approx. 90 sec. (with 0-60 cassette)
Bias AC Bias

Signal-tomoise ratio (NAB, at peak level)

0.44 V (- 5 dB) at a load
impedance 47 k ohms

Over 10 k ohms

Line outputs Rated output level

(phono jacks)

Load impedance

Why NR swm OFF 8~TVPE ON 07va ON

Cassette General
Power requrrements
TYPE |V (Sony METAL-ES) 58 dB 65 dB 71 dB AEP, G model: 220-230V AC, 50/60Hz
TYPE ll (Sony UX-S) 57 dB 64 dB 70 d8 UK model: 240V AC, 50/60Hz
TVPE ' (Sony HF-S) 54 dB 61 d8 67 d8 Saudi Arabia, E model: 120,220,240V AC,
50/60 Hz
Total harmonic distortion
~ Power consumption
9 .
1.0 /e (wrth Sony METAL ES cassettes) 25 watts
Frequency response (DOLBY NFl OFF) Dimensions Approx 355 X 134.5 X 310 mm (w/h/d)

including projecting parts and controls
Approx. 4.5 kg

TYPE lV cassette
(Sony METAL-ES)

30 ~15,000 Hz (i3 dB) Weight

Supplied accessory

TYPE ll cassette

30 - 14,000 Hz (:3 dB)

(phone jacks)

(Sony UX-S)

TYPE I cassette 30 ~13,000 HZ (:3 dB)

(Sony HF~S)
Wow and flutter :O.1B% (DIN)

Inputs

Line inputs Sensitivity 77.5 mV»(A20 dB)

input impedance

50 k ohms

Audio connecting cord (2)
Design and specifications subject to change without notice
Note

This appliance conforms with EEC Directive 87/308/EEC regarding
interference suppression,

STEREU CASSETTE DECK

SONY;

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TC-DSO5

TABLE OF CONTENTS

Section Title Page
Specifications ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1
Servicing Note . . - . ~ 2
Model Identification ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2
SECTION 1. GENERAL
1-1. Location of Controls --------------------- 3
SECTION 2. DISASSEMBLY
21. Front Panel Assenbly ~~~~~~~~~~~~~~~~~~~~ 4
2-2. Mechanism Deck ~~~~~~~~~~~~~~~~~~~~~~~ 4
SECTION 3. ADJUSTMENTS
341. Mechanical Adjustments ------------------ 5
32. Electrical Adjustments ~~~~~~~~~~~~~~~~~~~~ 5
SECTION 4. DIAGRAMS
' 4-1. Circuit Board Location -------------------- 8
4-2 Semiconductor Lead Layouts ~~~~~~~~~~~~ 8
443. Printed Wiring Boards (Main Section) ----- 10
4-4. Schematic Diagram (Main Section) ~~~~~~~~~~ 15
4-5. Schematic Diagram (Panel Section) 19
4-6. Printed Wiring Boards (Panel Section) """ 23
SECTION 5. EXPLODED VIEWS
5-1. Chassis Section ~~~~~~~~~~~~~~~~~~~~ 25
5'2. Front Panel Section --------------------- 26
5-3i Mechanism Deck Section (1) ~~~~~~~~~~~~~~~ 27
5-4. Mechanism Deck Section (2) --------------- 28
SECTION 6. ELECTRICAL PARTS LIST -------- 29

MODEL IDENTIFICATION
-Specification Label-

SONYo MODEL N0, Tc-oeos
-
STEREO CASSETTE DECK

IV/ A

AEP, G model: AC: 220-230V ~ 50/60Hz
UK model: AC: 240V N 50/60Hz
Saudi Arabia, E model: AC: IZOV, 220V, 240V ~ 50/60Hz 25W

SERVICING NOTE

Flexible Circuit Board Repairing

0 Keep the temperature of the soldering iron around
270°C during repairing.

0 Do not touch the soldering iron on the same con-
ductor of the circuit board (within 3 times).

0 Be careful not to apply force on the conductor
when soldering or unsoldering.

Notes on chip component replacement

I Never reuse a disconnected chip component.
0 Notice that the minus side of a tantalum capacitor
may be damaged by heat.

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY MARK [A 0R DOTTED
LINE WITH MARK A ON 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 PUB-
LISHED BY SONY.