Hitachi HAMD 5 Service Manual

Page 1

TY H No.345 EGF

HA-MD5

CONTENTS - INHALT - SOMMAIRE
SPECIFICATIONS - TECHNISCHE DATED -
CARACTERISTIOUES TECHNIQUES -------------
FEATURES ~ MERNMALE - CARACTEHISTIOUES w
DISASSEMBLY AND REPLACEMENT. zERLEeUNe UND

'Tl/QQQZV'V'M AUSTAUSCH - DEMONTAGE EY REMONTAGE ---------------- 3
Iggy/$2333, I 4; CHECKING THE OPERATION or THE PROTECTION CIRCUIT-

- , ' KONTROLLE OER FUNKTION DER SCHUTZ SCHALTUNG -
CONTROLE DE FONCTIONNEMENT nu CIRCUIT DE
PROTECTION ............................................. 451;
PRINTED wmINC EOARD ~ PRINTPLATTEN -
PLAN DE BASE
CIRCUIT DIAGRAM . SCHALTPLAN -
PLAN DE CIRCUIT
BLOCK DIAGRAM - BLOCK SCHEMA- SCHEMA ,
REPLACEMENT PARTS LIST - ERSATZTEILLISTE -

TABLEAU DES PLECE ..................................... 10
FRONT AND REAR PANEL - VORDERE UND HINTERE
BEDIENUNGSTAFEL s PANNEAUX AVANY

ET AMER: ................................................ ,3

@HITACHI

' SERVICE MANUAL

SAFETY PRECAUTIONS

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 bans in the power Circuit block should not be replaced with other makersr
Critical parts are marked with A in the schematic diagram and Circuit board diagram.

2 Before returning a repaired unit to the Customer, the service technician must thoroughly test the unit to ascertain that it
is completer safe to Operate without danger of electrical shock.

SPEC I FICATIO N s Measured pursuant to the Federal Trade Commission's Trade Regulation Rule on Power Output
Claims for Amplifierse This specifications are only for the U.S.A. and Canadian Model.
Power output 40 Watts" per Channel, min. Output level
(Both channels driven) RMS, at 8 ohms from 40 Hz to PEAPE REIC 311JT 1 150 IV
ono Over 08 CV9 '
[20 kHz, mh_ no.more_ than 01% (at 1 kHz) 80 mV For Semce Manuals Contact
otal harmonic distomon. S' a _ i tio MAURITRON TECHNICAL SERVICES
45 W/Ch + 45 W/Ch (8 Ohms. 1 kHz, g ° ° 5° 3 8 Cherry Tree Rd, Chinnor
T.H.D. 0.2%, SINUS) ($3833me 75 dB m o"Wotan 0x9 40v
f 1' -351694 Fax:- 01844652554
- 8 h - . e . _
:3 13:9: figwfigé) ° "5' 40 1 TUNER, DAD/AUX, Emlz- 5Wmes@uumumcom
Harmonic distortion (8 ohms) TAPE PLAY 1 2 :3 1ka
(at 1/2 rated output) 0.1% Damp 3 1 2
Intermodulation distortion Effects by each mode :2 $332 + 6 dB
(m 1/2 "d mp) 0' 1% 3 i 100 Hz +6 dB Io kHz +4 dB
Power bandwidth 10 Hz A 30 kHz 4: 700 H +6 dB.
(THU 02%, 1/2 Rated) 5; 100 H: _3 dB
Frequency characteristics 6 I 7 kHz __3 dB
PHONO 30 Hz 4 [5 kHz, RIAA $0.5 dB ' V 60 H
TUNERD AD / AUX, Power supply AC21023 50 z
TAPE PLAY 1 2 2° 2 4° m1 (2 dB) :fzoV/zzéglegzedv 50/60 Hz
Iggésbigsitmty/Impedunce 3 mV/47 190th Power cosumption 170W (at 1/3 rated output)
TUNER 160 mV/4O k-Ohms 250W (3 3 WP)
DAD/AUX 160 mV/40 )th Dimensions 320(W) X 72.5(H) X 284(D) mm
TAPE PLAY 1, 2 160 mV/40 k-ohms WW! 5 kg

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

STEREO AMPLIFIER
October 1982 TOYOKAWA WORKS