Hitachi TPQ 115 Service Manual

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(3 W T HITACHI

/ S Q, . Hitachi.Ltd. Tokyo Japan

TRANSISTOR STEREO

TAPE PLAYER
MODEL TPQ-I'IS

SERVICE MANUAL

No. 2 2 4 1 9 6 9
SPECIFICATIONS
PLAY BACK SYSTEM --------------------------------- 8 track, 4 Channels
TRANSISTORS
ZSC281 ............................................. Pre. Amp.
ZSC458- 4 Pre. Amp.
2SC281 - - AF. Amp.
280158 - ~ Driver
253357 X 2 Power Amp.
THERMISTORS
13D27 X 4 ------------------------------------- Temperature Compensator
DIODES
15310 X 4 - Rectifier
CARTRIDGE-wu- Stereo 8 tracks
TAPE SPEED ............................................ 3% ips
TAPE CHANGE SYSTEM Automatic or Manual Push Button System
FREQUENCY RANGE 40~13,000Hz
AUDIO OUTPUT -------------------------------------- 14W (integrate)
SPEAKER ----------------- 7* x 5* P.M. x 2

OUTPUT IMPEDANCE - 8 ohms at SF Jack

8 ohms at Headphone Jack

INPUT IMPEDANCE 10K ohms at Aux. Input Jack
POWER SUPPLYAC 120V 60Hz or 230V 50Hz
POWER CONSUMPTION ----------------------------- 50W
DIMENSIONS Player
4%(H) >< 15%(W) >< 11%(D)
Speaker
11%(H) >< 17%(W) >< 5%(D)
WEIGHT Player 11 lbs

Speaker Box 4 lbs. 802. X 2
ACCESSORIES Patch cord 1

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MODEL TPQ-lIS SERVICE MANUAL

CONTROLS AND CONNECTIONS

CARTRIDGE

DOOR
AUX<->TAPE CHANNEL CANNEL
SELECTOR lNDlCATOR SELECTOR

PlLOTLAMP

HEADPHONE
JACK

' TREBLE
ON OFF SWITCH & BASS CONTROL

VOLUME CONTROL CONTROL
BALANCE
CONTROL

Fig. 1

POWER CORD
AUX \NPUT SPEAKER
JACKS JACKS
Fig. 2
DISASSEMBLY

1. Removal of Chassis.
Remove nine screws holding chassis as shown in Fig. 3.
The chassis is pulled out from the cabinet, together with the escutcheon panel.
When pulling out the chassis, the cabinet is not damaged provided that the plate such as fibre is inserted in the gap

between panel and cabinet so that the side surface of the escutcheon panel and the inside surface of cabinet may not contact.

2. Removal of circuit board.

Remove four screws holding circuit board as shown in Fig. 4.