Hitachi HA M33 Service Manual

Page 1

No. 325EGF

@HITACHI

SERVICE MANUAL "A'M33

CONTENTS

Wm SPECIFICATIONS ......

1" 1

,; DISASSEMBLYAND REPLACEMENT. a
7??? BLOCK DIAGRAM ....... ...............4

_ ~ ggga PRINTED WIRING BOARD. 5
. . éf .4 CIRCUIT DIAGRAM ......... . .s
. ) , ' REPLACEMENT PARTS LIST. .1
~ ~ FRONT AND REAR PANEL ........ . .. o

SAFETY PRECAUTION
The Iollow-ng precaullons should be observed when servcing
I Smce many parts In Ihe unll have speaal salely relaled Charactensllcs. always use genuine HIIaChIs Ieplacemenl parIs EspeCIaIIy
cnIIcaI parls In Ihe power CIICUII block should nol be replaced wnh clher makers
CIIIical parls are marked wilh A in Ihe schemallc diagram and Clrcml board dlagvam
2 Belore veIuInIng a repaIred unit to Ihe cuslomer, Ihe serwce IechnICIan musl Ihoroughly lesl Ihe unII Io ascerlaln IhaI II Is complelely
sale In operale WIIhDuI danger ol eleclncal shock

SPECIFICATIONS
POWER output 40 watts per channel. Oulpul Icvel
(Both channels driven) min. RMS. at Bohms from TAPE REC OUT I50 mV
20 Hz to 20 kHz, will: no Phono overload level (II I kHz) IIOmV
more than 0.05%Iolal Signalio-noise ratio
harmonic distortion. HE A ""ka)
RMS Rated Output power 40 Wm; PHONO (MM) 72 13
(Both chnnncls driven) [I kHz. sohms THD. 0,05%. SINUS) TUNER- AUX-TAPE L 2 95 3
WI/fls Damping factor 25 (I kHz. Balm-Is)
(20 H; -20 kHz. Sohms THD. 0.05%) 3 °°"°' *8 d3 ('00 ll
Harmonic distortion (8 ohms) gr? Ponglrfl 3:08:13 (10 kHz)
(at ruled outpul) 0.05% 50": er 2
Inlermodulnlion dislorIion L0d"¢55 90"0' + 6 dB (100 Hl)
(a! [/2 rated uulpul) 0.05% +4d3 (10 kHz)
Power bandwidth 10 Hz _ 30 kHz Power supply AC IZO V 60 Hz.
(80hms.THD.O.l% l/ZRaIed) 20/? 50660!-
Frequency characteristics . " 120/ 20/240 50/50 HZ
TUNER.AUX.TAPE [.2 20 Hz _40 kHz I+ |.-3.0dB) Power consumpnon IOOW (at I/IO raled onlpul)
PHONO 30 Hz -15 kHz. RIAA :tO.5dB 150W (at In med oquuI)
' 230W (at raled output)
lnpul sensmvu /In-I edance
PHONO (MIX!) p 15 mV/d'l ,th Dimensions 435 (W) X 83 (H) X 290(D)mm
TUNER, AUX 160 HIV/45 k-ohrns ersl 5.5 kg
TAPE PLAY I. 2 I60 mV/45 kohms

Measured pursuam lo the Federal Trade Commissions Trade
Regulliion Rule on Power Oquul Claims for Amplifiers.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.

STEREO AMPLIFIER
May 1982 TOYOKAWA WORKS