Hitachi TRK 3 D 60 Service Manual
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Extracted text from Hitachi TRK 3 D 60 Service Manual (Ocr-read)
Page 1
[03 HITACHI
SERVICE MANUAL
)0 60 5 O0
\MMEIZ f3 3? f2.
LJ
TY No. 587E
TRK-3 D60
W,W(UN),AU
TNUQTIEFUDQESBQ
/
CONTENTS
KEY TO ILLUSTRATIONS .......... 1
SPECIFICATIONS ................. 2
DISASSEMBLY ................... 2
ADJUSTMENT ................... 4
INSPECTION OF MECHANISM ...... 5
LUBRICATION ................... 7
DIAL CORD STRINGING ........... 7
BLOCK DIAGRAM ................ 8
CIRCUIT DIAGRAM ............... 9
PRINTED WIRING BOARD ........ 11
EXPLODED VIEW ................. 13
REPLACEMENT PARTS LIST ....... 15
(EY TO ILLUSTRATIONS
I? RECORD BUTTON III 30 SYSTEM SWITCH {99 TUNING CONTROL
2 PLAYBACK BUTTON In TAPE SELECTOR m INNER MICROPHONE (MONAURAL)
:1 HEWIND BUTTON I2 OPERATION INDICATOR Q32 ROD ANTENNA
9 FAST FORWARD BUTTON II 30 SYSTEM INDICATOR 21 CD/LINE IN SOCKET
S EJECT/STOP BUTTON 197 GRAPHIC EOUALIZER CONTROLS 63) FM MODE/RlF/AFC SELECTOR
C PAUSE BUTTON IO VOLUME CONTROL (MAIN) II; Ac SOCKET
D OPERATE SWITCH 1ng FM STEREO INDICATOR @ HEADPHONES SOCKET
QTAPE COUNTER Q?) FUNCTION SELECTOR 2; VOLTAGE SELECTOR [For w]
I, RESET BUTTON w BAND SELECTOR @I no JACK [For w}
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
FIR/SW2 /SWI/IV|W RADIO CASSETTE TAPE RECORDER
June 1988 YOKOHAMA WORKS
Page 2
TR K-3D60
SAFETY PRECAUTION
The following precautions should be observed when servicing.
1. Since many parts in the unit have special safety-related characteristics, always use genuine Hitachis replacement
parts.
Especially critical parts in the power circuit block should not be replaced with other makers. Critical parts are
marked with AN in the circuit diagram and printed wiring board.
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
General Section
Power supply
240v, 50Hz [Au]
Batteries DC 15V
(IEC R20 x10 or equivalent)
Power (mains) 25W
Consumption
22W (5W X 2 + 12W)
(DC 10%THD)
Dimensions [WxHxD) 562 x 208 x 180 mm
Power output
Weight 6.4 kg (including battery)
Semiconductors ICs: 6
Transistors: 13
Diodes: 18
LEDs: 3
Radio Section
Circuit System FM/SW, /SW2 /MW 4-band
superheterodyne
Tuning Range FM: 88 to 108 MHz
SW,: 7.0 to 220 MHZ
SW, : 2.3 to 7.0 MHz
MW: 530 to 1,605 kHz
Sensitivity FM: 13 dB (Dra.), 5 dB (max)
SW,: 30 dB (pro). 20 dB (max)
SW, :48 dB iota.) , 35 dB (max)
MW: 50 dB (era), 35 dB (max)
Intermediate FM: 10.7 MHZ
Frequency AM: 455 kHz
Antennas FM/SW,: Rod antenna
SW, /MW: Built-in Ferritecore
antenna
DISASSEMBLY
1. Cassette Lid (For Only Cassette Lid Assembly)
(Fig. 1)
Push the cassette lid arm in the direction of the
arrow using a flat»tip screwdriver and pull the
cassette lid towards the from to remove it.
(Aerials)
2. Installing the Cassette Lid (For Only Cassette
Lid Assembly) (Fig. 2)
(1) Securely hook the boss of the cassette lid at
the spring as shown in Fig.2.
3. Top Panel (Fig. 3, 4, 5)
(1) Remove the ® fixing screws (6) shown in Fig.
3, 4, 5,
(2) Press the EJECT button to open the cassette
lid and lift the top panel holding the rod an-
tenna side to remove it.
110-127/200-220/230-250V,50/60Hz IW, W(UN)]
Tape Recorder Section
Tape
Tracks system
Tape Speed
Recording System
Erasing System
Playback Frequency
Response
Signal to Noise Ratio
Wow and Flutter
Crosstalk
Between Tracks
Between Channels
Erasing Ratio
Distortion
Heed
Motor
Input Sensitivity
and Impedance
Output Level and
Load Impedance
Compact Cassette (C30, C60, C90)
4-track (2-channel stereo)
4.75 cm/sec
AC bias 57 kHz
Magnet
Metal tape:
50 to 14,000 Hz
(HITACHI ME 90)
High bias tape (Chromium tape):
50 to 13,000 Hz
(HITACHI 5X90, HITACHI EXQO)
Normal tape:
50 to 12,000 Hz
45 dB
0.25% (WRMS)
55 dB
30 dB
60 dB
3%
Permalloy
Electrical DC micro motor
CD/Line in 600 mV, 25 kohms
Headphones 8 ohms to 300 ohms
4. Front Case (Fig. 3, 4, 5, 7)
Remove the fixing screws (11), pull the front
case slightly towards you and remove the ® cone
hector linking the speaker to the PA P.W.B.
5. Cassette Chassis (Fig. 6)
After removing the top panel, remove the ©fixing
screws (4) and connectors and and©.
6. MA P.W.B. (Fig. 6)
After removing the top panel, remove the @ fixing
screws (5) and the connectors and ©,
7. PA P.W.B. (Fig. 7)
After removing the front case, remove the ® (6),
® (1) and © (2) fixing screws, and connectors
®,©and®,
_2_