Hitachi J 3 Service Manual
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Page 1
@ H ITAC H I TY No. 285EGF
SERVICE MANUAL «'3
(-CONTENTS - INHALT- SOM MAIRE -fi
SPECIFICATIONS - TECHNISCHE DATEN-
SPECIFICATIONS...
DISASSEMBLY - AUSEINANDERBAU - DEMONTAGE ......... 4. 5
DIAL CORD STRINGING - FUHRUNG DES
ABSTIMMSEILZUNGS - CHEMINEMENT DU
CORDON D'ACCORD......
FEATURES - MERMALE - CARACTERISTIOUES
ADJUSTMENT- EINSTELLUNGEN - REGLAGE....
INSPECTION OF MECHANISM - INSPEKTION DES
MECHANISMUS - INSPECTION DU MECANISMES
LUBRICATION - SCHMIERUNG ' LUBRICATION
ADJUSTMENT PARTS LOCATION - LA_GE DER JUSTIERTEILE-
EMPLACEMENT DES ORGANES DE REGLAGE ...................... 15
FRONT AND REAR PANELS - VORDERE UND HINTERE
BEDIENUNGSTAFEL- PANNEAUX AVANT ET ARRIERE 1 6,17
PRINTED WIRING BOARD- PRINTPLATI'EN:
PLAN DE BASE ...... ......... 1 3.20.22
CIRCUIT DIAGRAM - SCHALTPLAN-
PLAN DE CIRCUITM ....... 19.21.2323
EXPLODED VIEW - EXPLOSIONSANSICHT-
VUE EXPLOSEE .....
SAFETY PRECAUTION
The following precautions should be observed when servtcing.
1, Since many parts in the unit have special salety related characteristics, always use genuine Hitachi's replacement parts. Especially critical parts in the
power circuit block should not be replaced with other makers.
Critical parts are marked with A in the circuit 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, J
SPECIFICATIONS
J3 (STEREO CASSETTE TUNER AMPLIFIER)
GENERAL SPECIFICATIONS Battery Life when using cas-
Semi conductors: le l 1 sctte continuously:
Transistors: 29 At 10 mW output- FM re-
FET: l cording: 8 hours
LEDs: 17 Music playback time (at vo-
Diodes: 23 Iume level 7): 2 hours
Power supply: AC 1 10-120V. 2207240V, 50/60 Hz
DC 12V battery: (IEC D" x 8, or TUNER SECTION
equivalentl Circuit system: FM/MW/SW 3 band superheterodyne
Car: (Use Hitachl car battery cord Frequency range: FM: 88 to 108 MHz
DCrMIH] MW: 530 to 1,605 kHz
Battery pack: DC 12V rechargeable SW: 3.2 to 12 MHz
Power consumption: 100W Sensitivity: FM: 5 av (S/N 30 dB)
Di ' 241(H)x 581 (W)X 230 (D) MW: 300 uV/m (SIN 20 dB 400 HZ
Weight 12.5 kg (with batteries) 30% MOD)
SW 15 uV (SW 20 dB 400 HZ 30%
MOD)
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
STEREO CASSETTE TUNER AMPLIFIER/ SPEAKER
September 1982 TOYOKAWA WORKS