Hitachi TRKW 2 H Service Manual

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TK I No. 2011!:

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SERVICE MANUAL * TRK-WZH

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KEY TO ILLUSTRATIONS

POWEstnCH

AUTO REVERSE CASSETTE PLAYER
COUNTERRESETBUTTON
TAPECOUNTER

PROGRAM BUTTON

CASSETTE PIAYER RELEASE BUTTON
FM STEREO INDICATOR
PROGRAMINmCATOR

TAPE INDICATOR

TAPE INDICATOR

6
RECORD 'ND'CATOR
TUNING CONTROL AUTO REVERSE CASSETTE PLAYER

OPERATION INDICATOR FAST FORWARD/REWIND BUTTON
TELESCOPIC ANTENNA DC 3V SOCKET

LEVEL INDICATORS OPERATION INDICATOR
FUNCTION SELECTOR HEADPHONES JACKS (A, B)
BUILT-IN MICROPHONE (MONAURAL) VOLUME CONTROL

BAND SELECTOR TAPE SELECTOR

RECORDING MUTE BUTTON STOP BUTTON

TAPE SELECT BUTTONS PLAYBACK BUTTON

VOLUME CONTROLS (LEFT and RIGHT) REVERSE BUTTON

TONE CONTROLS (BASS and TREBLE)
MIXING MIC. VOLUME CONTROL
HEADPHONES JACK

MIXING MIC. JACK

PAUSE BUTTON

STOP BUTTON

FAST FORWARD/CUE BUTTON
PLAYBACK BUTTON

'I REWIND/REVIEW BUTTON
RECORD BUTTON

EJECT BUTTON

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SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

FM/SWz/SWI/AM RADIO CASSETTE TAPE RECORDER

Sept. 1983 TOKAI WORKS

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TRK-W2H I

SAFETY PRECAUTIONS

The following precautions should be observed when servicing.

1. Since many parts in the unit have special satety~related characteristics. always use genuine Hitachis replacement
parts. Especially critical parts in the power circuit block should not be replaced with other makes.

Critical parts are marked with A in the schematic diagram and circuit board diagram.

2. Before returning is 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.

3. Before returning a repaired unit to the customer. the service technician must measure the leakage-current or
resistance to determine that the exposed parts are acceptabiy insulated from the power circuit.

General Section
Semiconductors :

Power (Mains) Supply :

Power (Mains)
Consumption :

Power Output :

Speakers :

Dimensions :
Weight :

Radio Section
Circuit System :

Tuning Range :

Intermediate
Frequency :

Sensitivity :

Antennas (Aerials) :

SPECIFiCATIONS

le : 8

Transistors: 17

Diodes : 12

Zener diodes : 3

LEDs : 13

Varicap : 1

AC : 110«127V/200-220V/
230-250V, 50/80 Hz

DC : 12V FD Cell X8 or equivalent)

equivalent]

Car : Use Hitachi car battery adaptor

(0-73)

18W

5W/CH(T.H.D.10%)

Woofer : 16cm. 2.8 ohms X2
Tweeter : 2cm, 500 ohms X 2
6000MX215tH)><169(D)mm

6.5kg (with batteries and cassette

player)

FM/SWz/SWi/AM 4-band
super-heterodyne

FM :88 to 108 MHz
SW2: 7 to 22 MHz

SW1 : 2.3 to 7 MHz

AM : 530 to 1,605 kHz

FM : 10.7 MHz

SW2/SWi/AM : 455 kHz

FM : 10 dB(pra.), O dB(rnax.)

SW2: 25 dB(pra.), 18 dB(maxi)

SW: : 43 dB(pra), 30 dB(max.)

AM : as d8(pra.), 35 dB(max.)

FM/SW2 : Telescopic antenna

SWi/AM : Built-in ferrite-core
antenna

Tape :

Track System :
Tape Speed :
Recording System :
Erasing System :

Frequency Response :

Signal to Noise Ratio :

Wow and Flutter :
Crosstalk :

input Sensitivity
and Impedance 2

Output Level :
Output Load
Impedance :

Distortion :

Erase Ratio :

Fast Forwarding or
Rewinding time :

Motor:

Semiconductors :

Power Supply :

Power Consumption :

Power Output :
Tape :
Track System :

Tape Recorder Section (TAPE I2 )

Cassette tape (C-30. 60, 90)
4 track 2 channel stereo
4.76cm/s

AC bias. 57 kHz

AC erase

Metal : 30-11000 Hz
Cr02 :30-16.000 Hz
Normal : 30-15,000 Hz

50 dB

008% (WRMS)

Between tracks : 50 dB
Between channels 2 25 dB

Mixing mic. : 2.5 mV. 10 kohms
Line in : AOOmV, 7D kohms
Phone : SmV. sokohms

Line out : 450mV

Line out : 50kohms
Headphone : 8-100 ohms
Ext. speaker : 2.8-8 ohms
2%

60 dB

90 sec. (using C-GO)
DC micromotor

Stereo Cassette Player (TAPE [3 )

ICs : 2

Transistors : 9

LED': 1

Varistor : 1

Hall element : 1

DC : 3V (AA Cell X2 or
equivalent)

AC : Use optional AC adaptor
(3V)

145 mA (with no signal)

25mW/CH (T.H,D. 10%)

Cassette tape (C-30, 60. 90)

4 track 2 channel stereo