Hitachi DE 44 Service Manual

Page 1

TKT No. 1687E

HITACHI

D-E44
SERVICE MAN UAI. (U,C,FS,BS,AU,W)

CONTENTS
Specifications ........................ 2
Disassembly .......................... 2
Adjustments ......................... 3
Inspection of mechanism ................. 5
Lubrication: ......................... 5
Schematic diagram ..................... 6
Circuit board diagram ................... 9
Wiring diagram ....................... 11
Replacement parts list ............. 13, 19, 23
Exploded view (Mechanism»FL-90F) ........ 15
Exploded view (Cabinet) ................ I7
IC501 pin function table ................ 20
KEY TO ILLUSTRATIONS

® POWER IMAINSI SWITCH ® MICROPHONE SOCKETS

® TIMER SWITCH ® REc. MUTE BUTTON

® TAPE COUNTER RESET BUTTON ® PAUSE BUTTON

G) TAPE COUNTER @ PAUSE INDICATOR

© TAPE SELECT SWITCHES ® RECORD BUTTON

© DIGITAL PEAK METERS RECORD INDICATOR

® DOLBY NR SWITCH @ STOP BUTTON

DOLBY C NR INDICATOR @ FAST FORWARD BUTTON

® DOLBY B/C NR CHANGE OVER SWITCH ® PLAYBACK BUTTON

@ RECORDING LEVEL CONTROL (RIGHT) Q3) PLAYBACK INDICATOR

® RECORDING LEVEL CONTROL (LEFT) @ REWIND BUTTON

® INPUT SELECT SWITCH ® EJECT BUTTON

® HEADPHONE SOCKET

7 SAFETY PR ECAUTION

The following precautions should be observed when servicing.

1. Since many parts in the unit have special safety-related characteristics, always use genuine Hitachi's replacement
parts. Especially critical parts in the power circuit block should not be replaced with other makes.
Critical parts are marked with Ain the schematic diagram, and circuit board diagram.

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 AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

STEREO CASSETTE TAPE DECK

February 1982 TOKAI WORKS