Hitachi HA-5700 Service Manual

HA-5700
SERVICE
MANUAL
English
Deutsch
Francais
No. 183
SPECIFICATIONS
POWER output
(Both channels driven)
Power bandwidth
Frequency characteristics
TUNER, TAPE 1,2
PHONO
Harmonic distortion (8 ohms)
(at rated output)
(at 1/2 rated output)
intermodulation distortion
(at 1/2 rated output)
Input sensitivity /Impedance
PHONO
TUNER, AUX
TAPE PLAY 1, 2
Output level
TAPE REC OUT 1,2
Phono overload level (at 1 kHz, T.H.D.0.01%)
Signai-to-noise ratio (IHF, A network)
PHONO
TUNER, AUX, TAPE 1, 2
Damping factor
Bass control
Treble control
Loudness control
Subsonic filter
Semi-conductors
Power supply
Power consumption
Dimensions
Weight
%* Measured pursuant to the Federal Trade
Commission's Trade Regulation Rule on
Power Output Claims for Amplifiers.
50 watts* per channel, min. RMS,
at 8 ohms from 20 Hz to 20 kHz,
with no more than 0.02% total
harmonic distortion,
50 W/ch + 50 W/ch (8 ohms, 1 kHz, T.H.D.
0.02%)
40 W/ch + 40 W/ch (4 ohms, 1 kHz, T.H.D.
0.02%)
5 Hz — 40 kHz
10 Hz — 100 kHz (+0.5, —4.5 dB)
RIAA +0.3 dB
Less than 0.02%
Less than 0.02%
Less than 0.03%
MM 2.5 mV (47 k-ohms)
MC 0.25 mV (100 ohms)
150 mV/47 k-ohms
150 mV/47 k-ohms [TAPE PLAY 1 (DIN):
150 mV/47 k-ohms (except for U.S.A. &
CANADA)]
150 mV [TAPE REC 1 (DIN): 40 mV/
70 k-ohms (except for U.S.A. & CANADA)]
250 mV
80 dB (MM) 60 dB (MC)
100 dB
50 (1 kHz, 8 ohms)
+8 dB (100 Hz)
+8 dB (10 kHz)
+6 dB (100 Hz)
+3 dB (10 kHz)
15 Hz (-6 dB/oct)
7 ICs, 17 transistors, 4 FETs and 66 diodes
(28 LEDs)
AC 120 V 60 Hz, ~220 V 50/60 Hz, ~240 V
50/60 Hz or ~120 V/220 V/240 V 50/60 Hz
300 VA, 230 W (at 1/3 rated output}
430 W (at rated output)
435 (W) x 110 (H) x 380 (D} mm
10.8 kg
Specifications and designs may be changed without notice for Improvement.
STEREO AMPLIFIER
July 1979
7 FEATURES
1. 3-stage direct-coupling power
amplifier with minimal phase
fluctuations
2. Equalizer and tone amplifiers
using newly developed high-
performance ICs
3. MC position for direct con-
nection of MC cartridge
4.
LED
peak
power
indicator
with
a superior following performance
. Powerful power supply circuit
. LED program source indicators
7. High-reliability pretection circuit-
o ol
ry
8. Deluxe design

Hitachi HA-5700 Specifications

General

Brand	Hitachi
Model	HA-5700
Category	Amplifier
Language	English

Summary

SPECIFICATIONS

POWER output

Details power output specs for both channels, min. RMS, at 8 ohms, 20 Hz-20 kHz.

FEATURES

SERVICE POINTS

ADJUSTMENT PROCEDURES

Idle Current Adjustment

Output DC Offset Check

PROTECTION CIRCUIT OPERATION CHECK

ASO Detection Circuit Test

Procedure to verify the ASO detection circuit for output transistors.

Speaker Protection Circuit Test

Steps to test the speaker relay and protection function.

Power MOS FET Test Method

How to test the power MOS FETs using specific methods.