Hitachi SDT 3431 Service Manual
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Extracted text from Hitachi SDT 3431 Service Manual (Ocr-read)
Page 1
HITACHI
Hitachi, Ltd. Tok yo Japan
AMBIOPHONIC SYSTEM
EM/ AM COMPACT STEREO
with CASSETTE TAPE RECORDER
8. AUTOMATIC RECORD CHANGER
MODEl SDI-3431
SERVICE MANUAI.
No.646 1974
SPECIFICATIONS
RADIO CIRCUIT SYSTEM ------ FM/AM superpheterodyne
with FM multiplex stereo adaptor
CR601 VOGC]
CRGOZ VOGC
.................. f'e
TUNING RANGE- ~FM: 88~108 MHz 2R6 385E] Rec I r
AM: 530~l,605kHz R504 6
TAPE--- Compact cassette
1C TAPE SPEED 1% ips (4.750m/Sec1)
[€201 TRMIZO FM 1F Amp. & AM Conv RECORDING OR . .
IC202 TRM121 FM/AM IF Amp PLAYING TIME} 60mm (usmg C760)
IC301 SN76110 MPX, RECORDING SYSTEM AC bias
1C501A,B STKOll ower Amp ERASING SYSTEM- AC erase
IC701A,B FA6018 -- Pre-ampI Stereo 4 track
IC702A,B FA6019 ----- Preeamp Hell/2U (160m) Woofer><2
TRANSISTORS 2 (5cm) Tweeteer
0101 28K37~ AUDIO OUTPUT ...... 15sz (PIM.P)
sz 25C535, FREQUENCY RANGE 40~20,000Hz
Q401A,B ZSC458LG . POWER SUPPLY ....... AC: 120v GOHZ
Q701 2SB77 rrrrrrrrrrrrrrrrrr B' OSC POWER CONSUMPTION 80W
Q702 ZSB77} "55 - INPUT IMPEDANCE ....... ~-AUX. IN: 130m
DIODES MIC. IN: 5kg
. . OUTPUT IMPEDANCE "REC. OUT: 15k!)
D101 HV80-u -FM Limiter FRONT SPEAKER: 30
D102 1585- AFC REAR SPEAKER: 8&1
D103 HV 80 'FM Limiter HEADPHONE: SQ
D151 I-IV80 AM AGC MICROPHONE Dynamic microphone
D201 HV30~~ ~FM Limit6r ANTENNA-m --FM: Line cord antenna
D202 1N60P}u ~FM Disc AM;Built-in ferrite-core antenna
D203 1N6°P ' SENSITIVITY wFM: 7w (practical)
D204 1N34Am ~AM Det. AM: 25011V (practical)
D205 1N60} ,,,,,,,,,,, Red for tuning meter DIMENTIONS ---Radio: 9%(H)><243/4(W)><14l/3(D)
9206 50 WEIGHTm-m mRadiD: 29 lbs. 4 021 (133kg)
D601 AW01-13-- Voltage stabilizer
D701A,B 1N34A Rect. for automatic level control
D702A,B 1N34A~ ~Rect. {or level meter
ACCESSORIES
DYNAMIC MICROPHONE
COMPACT CASSETTE (C-30
Page 2
SOT-3431'
CONTROLS
STER E0
INDICATOR
(5750345) TUNING CONTROL (6274971)
POWER
SWITCH FUNCTION SELECTOR
(5632931) (6274991)
TUNING METER AFC SWITCH
, - TAPE COUNTER
(5552092) (5632911) (5550175)
E
TEOAIEPHON RECORDING LEVEL METER:
(5671631) LEFT (5551943;
MIC JACK: LEFT /MON0
MIC, JACK: RIGHT
RECORDING LEVEL
METER: RIGHT
(5551943)
MODE
SWITCH BALANCE RECORDING LEVEL
(56329I1) CONTROL (Eggggts) CONTROLS (6272022)
HIGH FILTER (6267946) TREBLE LOUDNESS
SWITCH CONTROL CONTROL (6267946)
(5532911) (5267946)
Fig, 1
REAR SPEAKER JACKS
CASSETTE
LID
FAST FORWARD
BUTTON
BUTTON
, _ PLAY BUTTON
FM ANT. TERMINALS _ SSEEfifigéNGE RECORD BUTTON
(5680682) FRONT SPEAVKER JACKS . REWIND BUTTON
LINE CORD ANTENNA (23:3; 14:7) SW'TCH EJECT BUTTON
Fig- 2 Fig, 3