Hitachi TRQ 520 Service Manual

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HIT/mm

Hitachi. Ltd. Tokyo Japan

HITACHI TAPE RECORDER
MODEL TRQ-SEO

SEEWQE MANUEL

No. 119 1966

SPECIFICATIONS
TRANSISTOR COMPONENT . . . AUDIO OUTPUT ............. 1w (Maximum)
23373, 2SB75, 25377x2, 2531:36sz FREQUENCY RANGE -
DIODE & VARISTOR ..... 1N34A,15310><4,HV16,HV15 3%"/sec ............. 150~8,000 c/s
TAPE SPEED ..... 3%", sec, 1%/5ec (9.5cm/sec, 4.75Cm,sec) 1%sz - --------- 1504900 c/s
TAPE REEL .................... 5" reel INPUT IMPEDANCE. . . .Approx. 2K9 at MIC termimal

RECORDING TIME . I334/sec, Ztracks, . .1 hour (50ptape)
1};/sec,21racks. . ,2hoursI50ptape)

Approx. 2001? at LINE terminal
OUTPUT IMPEDANCE ................ 100

RECORDING SYSTEM ,,,,,,,,,,,,,,, AC bias REWINDING TIME . . . . Within 3 min. (5" reel, 50;: tape)
ERASING SYSTEM .............. DC exasing ' FAST'FORWARDING TIME - -
Within 6 min. (5 reel, 50/: tape)
TRACK SYSTEM ........... monautaI dual-Hack
M q MICROPHONE . . . .Dynamic,with remote ON/OFstitch
/\ER SOURCE . . .DC 9V ("D oeleG) RAT
AC 100V, 115], 200,230V(50~60 c/S) OPE ING SYSTEM ........... All push button
MOTOR .......... DC Micro Motor with Governor DIMENSIONS ---------- 11% (W), 3%(H>19%" 9 2
POWER CONSUMPTION ........ DC 1.8W,AC 3.6W (30" X 5"")
WEIGHT ................... 8.4 lbs (3.8kg)
SPEAKER .............. 4"X2%" (10X7cm) PM
AC C E SS 0 R I E S

DYNAMIC MICROPHONE
5" RECORDING TAPE

5 REEL

POWER SOURCE CORD

EXTENSION CORD
SPLICING TAPE
MAGNETIC EARPHONE
CELL (UM-1H)x6

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MODEL TRQ-52O SERVICE MANUAL

DESCRIPTION

1. The recorder operates on DC and AC (AC adaptor built-in.)

2. "Push button" system renders its operation simple and easy
with one hand

3. LEVELMATIC device, which controls recording level auto-
matically, is provided.

4. Front speaker system provides large audio output(l\\')and
beautiful, rich sound.

5. Tape counter is provided.

6. You can carry the recorder with the microphone and 5»inch
tape enclosed.

7. Monitoring is possible through the speaker.

8. Mixing is possible.

SERVICE POINTS

1. How to remove the upper panel

Remove the head coi'er and pressure roller. Loosen the five
screws shown in Fig. 1, and the upper panel is ready to be
taken off for inspecting or lubricating the mechanical parts.

UPPER PANEL HOLDING SCREWS

HEAD COVER PRESSURE ROLLER

Fig. 1

3. How to remove the printed circuit board
Take off the three circuit board holding screws shown in
Fig. 3, the radiated board holding screw, the circuit board
holding screw shown in Fig. 4, the switch holding screw and

RADIATION PLATE HOLDING SCREW

JACK PLATE HOLDING SCREWS

PRINTED CIRCUIT BOARD
HOLDING SCREWS

Fig. 3

2. How to draw out the chassis

After removing the battery cover, loosen the four screws
shown in Fig. 2, and the chassis can be drawn out to inspect-
ing the amplifier part.

CHASSIS HOLDING SCREWS

the spring
Take off the two jack board holding screws and raise jack
side, and you check the pattern of the printed circuit board.

SWITCH HOLDING

SCREW PRINTED CIRCUIT BOARD
HOLDING SCREWS

,1 « ..
,. It nun! ,;!

. e

«43/ """ K'CD .li

Fig. 4

.; V. 17".» .1
PRING