Hitachi TRK 3 D 60 Service Manual

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Extracted text from Hitachi TRK 3 D 60 Service Manual (Ocr-read)

Page 1

[03 HITACHI
SERVICE MANUAL

)0 60 5 O0

\MMEIZ f3 3? f2.

TY No. 587E

TRK-3 D60
W,W(UN),AU

TNUQTIEFUDQESBQ

/
CONTENTS
KEY TO ILLUSTRATIONS .......... 1
SPECIFICATIONS ................. 2
DISASSEMBLY ................... 2
ADJUSTMENT ................... 4
INSPECTION OF MECHANISM ...... 5
LUBRICATION ................... 7
DIAL CORD STRINGING ........... 7
BLOCK DIAGRAM ................ 8
CIRCUIT DIAGRAM ............... 9
PRINTED WIRING BOARD ........ 11
EXPLODED VIEW ................. 13
REPLACEMENT PARTS LIST ....... 15

(EY TO ILLUSTRATIONS

I? RECORD BUTTON III 30 SYSTEM SWITCH {99 TUNING CONTROL

2 PLAYBACK BUTTON In TAPE SELECTOR m INNER MICROPHONE (MONAURAL)
:1 HEWIND BUTTON I2 OPERATION INDICATOR Q32 ROD ANTENNA

9 FAST FORWARD BUTTON II 30 SYSTEM INDICATOR 21 CD/LINE IN SOCKET

S EJECT/STOP BUTTON 197 GRAPHIC EOUALIZER CONTROLS 63) FM MODE/RlF/AFC SELECTOR

C PAUSE BUTTON IO VOLUME CONTROL (MAIN) II; Ac SOCKET

D OPERATE SWITCH 1ng FM STEREO INDICATOR @ HEADPHONES SOCKET

QTAPE COUNTER Q?) FUNCTION SELECTOR 2; VOLTAGE SELECTOR [For w]

I, RESET BUTTON w BAND SELECTOR @I no JACK [For w}

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

FIR/SW2 /SWI/IV|W RADIO CASSETTE TAPE RECORDER

June 1988 YOKOHAMA WORKS

Page 2

TR K-3D60

SAFETY PRECAUTION

The following precautions should be observed when servicing.

1. Since many parts in the unit have special safety-related characteristics, always use genuine Hitachis replacement

parts.

Especially critical parts in the power circuit block should not be replaced with other makers. Critical parts are

marked with AN in the circuit diagram and printed wiring board.

2. Before returning a repaired unit to the customer, the service technician must thoroughly test the unit to ascertain

that it is completely safe to operate without danger of electrical shock.

SPECIFICATIONS

General Section
Power supply
240v, 50Hz [Au]

Batteries DC 15V
(IEC R20 x10 or equivalent)
Power (mains) 25W
Consumption

22W (5W X 2 + 12W)
(DC 10%THD)
Dimensions [WxHxD) 562 x 208 x 180 mm

Power output

Weight 6.4 kg (including battery)
Semiconductors ICs: 6
Transistors: 13
Diodes: 18
LEDs: 3

Radio Section
Circuit System FM/SW, /SW2 /MW 4-band
superheterodyne
Tuning Range FM: 88 to 108 MHz
SW,: 7.0 to 220 MHZ
SW, : 2.3 to 7.0 MHz
MW: 530 to 1,605 kHz
Sensitivity FM: 13 dB (Dra.), 5 dB (max)
SW,: 30 dB (pro). 20 dB (max)
SW, :48 dB iota.) , 35 dB (max)
MW: 50 dB (era), 35 dB (max)

Intermediate FM: 10.7 MHZ
Frequency AM: 455 kHz
Antennas FM/SW,: Rod antenna

SW, /MW: Built-in Ferritecore
antenna

DISASSEMBLY

1. Cassette Lid (For Only Cassette Lid Assembly)
(Fig. 1)

Push the cassette lid arm in the direction of the

arrow using a flat»tip screwdriver and pull the

cassette lid towards the from to remove it.

(Aerials)

2. Installing the Cassette Lid (For Only Cassette
Lid Assembly) (Fig. 2)

(1) Securely hook the boss of the cassette lid at
the spring as shown in Fig.2.

3. Top Panel (Fig. 3, 4, 5)

(1) Remove the ® fixing screws (6) shown in Fig.
3, 4, 5,

(2) Press the EJECT button to open the cassette
lid and lift the top panel holding the rod an-
tenna side to remove it.

110-127/200-220/230-250V,50/60Hz IW, W(UN)]

Tape Recorder Section

Tape

Tracks system

Tape Speed

Recording System

Erasing System

Playback Frequency
Response

Signal to Noise Ratio

Wow and Flutter

Crosstalk

Between Tracks

Between Channels

Erasing Ratio

Distortion

Heed

Motor

Input Sensitivity
and Impedance

Output Level and
Load Impedance

Compact Cassette (C30, C60, C90)
4-track (2-channel stereo)

4.75 cm/sec

AC bias 57 kHz

Magnet

Metal tape:

50 to 14,000 Hz

(HITACHI ME 90)

High bias tape (Chromium tape):
50 to 13,000 Hz

(HITACHI 5X90, HITACHI EXQO)
Normal tape:

50 to 12,000 Hz

45 dB

0.25% (WRMS)

55 dB

30 dB

60 dB

Permalloy

Electrical DC micro motor
CD/Line in 600 mV, 25 kohms

Headphones 8 ohms to 300 ohms

4. Front Case (Fig. 3, 4, 5, 7)

Remove the fixing screws (11), pull the front
case slightly towards you and remove the ® cone
hector linking the speaker to the PA P.W.B.

®,©and®,

_2_