Hitachi ST 3440 Service Manual
This is the 20 pages manual for Hitachi ST 3440 Service Manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from Hitachi ST 3440 Service Manual (Ocr-read)
Page 1
HITACHI
Hitachi. Ltd. Tokyo Juan
FM/ AM COMPACT STEREO
with CASSETTE TAPE RECORDER
MODEI. ST-3440
SERVICE MANUAL
No. 7 3 6 1 9 7 5
SPECIFICATIONS
TUNER AND AMPLIFIER SECTION INPUT IMPEDANCE ............ 1.500 m (AUX, IN)
RADIO CIRCUIT SYSTEM FM/AM superheterodyn TAPE DECK SECTION
TUNING RANGE .................. FM : 88~108 MHz CARTRIDGE TAPE ............... Compact cassette tape
AM : 530~1,605 kHz TAPE SPEED ........................ 1-7/8 ips (4.75cm/s)
INTERMEDIATE ., "FM : 10.7 MHz TRACK SYSTEM .................. Stereo 4 track
FREQUENCY AM : 455 kHz FREQUENCY RESPONSE ,I.70~12,000 Hz
SENSITIVITY ........................ FM : ZpV/m (II-IF S/N 30dB)
AM : 300/zV/m (ll-IF S/N ZOdB)
AMPLIFIER FREQUENCY .u50~15,000 Hz
RESPONSE
AUDIO OUTPUT .. .5WX2 (Mini. RMS, at SQ. from
100 Hz to 15.000 Hz, with no
more than 5% THD)
ANTENNA .............................. FM : Line cord or external
antenna
AM : F errite-core antenna
OUTPUT IMPEDANCE ......... 100 kSZ (REC, OUT)
8 £2 (SPEAKER)
RECORDING SYSTEM
ERASING SYSTEM I
POWER SUPPLY ...AC 120M 60 Hz
SEMI-CONDUCTOR. 5 IC 14 Transistor, 21 Diode
POWER CONSUMPTION ...... 50 W -
DIMENSIONS ........................ 19-5/16+M3><4-13/16'I(H)><
11-13/16(D)
(49x121x30 cm)
WEIGHT ................................. 57 kg (12 lb 9 oz)
Page 2
CONTROLS
REW./REVEUW BUTTON
TAPE COUNTER
REC. BUTTON
PLAY BUTTON
F.F./CUE BUTTON
STOP BUTTON
EJECT BUTTON
PAUSE BUTTON
FM STEREO INDICATOR TUNING CONTROL KNOB
I
MIC. JACK
HEAD PHONE JACK
BASS CONTROL KNOB POWER SWITCH
TREBLE CONTROL KNOB FUNCTION SELECT KNOB
BALANCE CONTROL KNOB VOLUME CONTROL KNOB
EXT. ANTENNA TERMINAL
AC SOCKET FM LINE CORD ANTENNA
REC. OUT JACK
PHONO/AUX IN JACK
REAR SP. TERMINAL
FRONT SP. JACK
Page 8
4) Pressure of fast forward pulley and flywheel in
rew. mode.
(D In REVlC mode, hook a spring scale to the fast forward
pulley as shown in Fig. 9,
@Stop the rotating of motor and take a reading only
when the fast forward pulley is pulled backward by
the spring scale.
®The reading should be 60g.
5) Pressure of fast forward pulley and idler in M. mode.
(1) In FF. mode, hook a spring scale to the fast forward
pulley as shown in Fig. 10.
@Stop the rotating of motor and take a reading only
when the fast forward roller is pulled backward by
the spring scale.
@The reading should be 80g.
6) Pressuer of fast forward pulley and flywheel in H.
mode
@In FF. mode, hook a spring scale to the fast forward
pulley as shown in Fig, 9.
@Stop the rotating of motor and take a reading only
when the fast forward pulley is pulled backward by
the spring scale.
@ The reading should be 150g.
7) Torque of turn table.
@Take up torque 40 to 70g-cm.
(2) Rewind torque SOg-cm or more.
® Fast forward torque SOg-cm or more,
FLYWH EEL
Fig. 9
TURN TABLE
FAST FORWARD PULLBl
IDLER
Fig, 10