Hitachi HCA 8500 Mk3 Service Manual

Page 1

TY No. 388 EGF

HITACHI

O SERV EM'ANIIAL HCA'3500MKH

CONTENTS - INHALT ~ SOMMAIREfi

SPECIFICATIONS TECHNISCHE DATEN
CAPACITERISTIOUES TECHNIQUES
FEATURES MERKMALE- CARACTERISTIQUES --
SERVICE POINTS WARTUNGSPUNKTE

POINTS DE SERVIC .................................... 45
ADJUSTMENTS - EINSTELLVERFFAHREN ' REGLAGE 6
PRINTED WIRING BOARD - PRINTLATTEN -

173
'3

mm .35 BASE .. ................................... 1
CIRCUIT DIAGRAM - SCHALTPLAN-

FLA DE CIRCUIT ....................................... 5
TROUBLESHOOTING - FEHLERSUCHE-

DETECTION DE PANNES -------------------------------- 9
BLOCK DIAGRAM BLOCKSCHEMA- SCHEMA --------- 1o
DISASSEMBLY AND REPLACEMENT ZERLEGUNG UND
AUSTAUSCH- DEMONTAGE ET REMONTAGE ---------- 1o
REPLACEMENT PARTS LIST- ERSATZTEILLISTE

TAaLEAu DES PIECE ------------------------------- 11~13

FRONT AND REAR PANEL- VORDERE UND HINTERE
BEDIENUNGSTFEL' PANNEAUX AVANT ET ARRIEPE .... 14

SAFETY PR ECAUTION

The following precautions should be observed when servicing.

I. Since many parts in the unit have special safely related characteristics, always use genuine Hitachi's replacement parts.
Especially Critical parts in the power circuit block should not be replaced with other makers.
Cmical parts are marked with A in the Circuit diagram and prInted wmng 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. J
SPECIFICATIONS
Input sensitivityl~ TUNER, CD/AUX l04 dB
Impedance Total harmonic
PHONO IMMI 2.5 mV/lOO krohms, 47 kvohms, distortion
22 k-ohms (20 H1 - 20 kHz)
a PHONO (MC) 0.1 mV, 2.5 mV/lOO ohms PHONO Less than 0.005% at REC OUT level 5 V
TUNER, CD/AUX l50 mV/47 k-ohrns TUNER, CD/AUX Less than D 005% at PRE OUT level 5 V
TAPE PLAV 150 mV/47 krohms Tone control
Max. input level BASS 1 8 dB (50 HZ, 100 Hz turnover at
I1 kHz, T.H.D. 0.005%) 150 Hz, 300 Hzl
PHONO TREBLE : 8 dB HO kHz, 20 kHz turnover at
(MM, MC 2.5 mV) 260 mV 3 kHz, 6 Hz)

PHONO IMC 0.1 mVl 10 mV Loudness control
Output level/Impedance (Volume -30 dB) + 7 dB (5c Hz), + 4 dB (10 kHzl
TAPE REC OUT l50 (V/600 ohms Subsonic filter l5 Hz l6 dB/cctl

PRE OUT 1 V/GOO ohms Mute -20 dB
Frequency Power supply AC 120 V 60 Hz, 220 , 240 V
characterlstics ~ 50/60 Hz, 110 7 120 V 'v /220 7240 V
PHONO (MM, MC) 20 Hz 7 20 kHz l: 0.2 dB FllAAl A) 50/60 Hz

TUNER, CD/AUX 5 Hz 7 100 kHz It? dB)

Signal-to-noise ratio
IIHF, short-civcuited, A

network)
PHONO (MM) 91 dB
PHONO (MC) 75 dB (input level 0.25 mVl

Power consumption
Dimensions
Weight

l8 W (AC 120 v, 220 V - 240 v M
435 (W) x 83 lH) x 292 (Dl mm
4.5 kg

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

STEREO CONTROL AMPLIFIER

September 1983

TOYOKAWA WORKS