Technics SAEH 60 X Service Manual

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ORDER NO. A09612217CS

Service Manual

Tuner/Amplifier

Tuner/Amplifier

SA-EHGOX

System: SC-V0958
*1 sa-vcesa * sa-vcssa
SL-EHsox SH-EHsox Colour
*ZSB-PCGOX (K) ................. Black
Area
(GK) ............... China
*esa-Pseox
PIS-EH60 SA-EHSUX Remote Control
Transmitter
Specifications
I Amplifier Section Output level:
Power output: v Eagiasnnfisenecour: 250 mV/Ls kohm

DIN 1 kHz, THD 1%, both channels driven: 2 X 70 W(6 ohm)
RMS 1 kHz, THD 10%, both channels driven: 2 X 100 W(6 ohm)
PRO LOGIC mode
DIN 1 kHz, THD 1%
MAIN (both channels driven): 2 X 50 W(6 ohm)
CENTER: 50 W(8 ohm)
SURROUND: 50 W(4 ohm + 4 ohm)
HMS 1 kHz, THD10%
MAIN (both channels driven): 2 X 70 W(6 ohm)
CENTER: 70 W(8 ohm)
SURROUND: 7O W(4 ohm + 4 ohm)
PMP01 kHz: 200 W
(MAIN 6 ohm, CENT. 8 ohm, SURR. 4 ohm + 4 ohm)
Total harmonic distortion
Rated power at1 kHz: 1 %(6 ohm)
Half power at 1 kHz: 0.09 °/o(6 chm)
Load impedance:
MAIN: 6 ohm - 8 ohm
CENTER: 8 ohm
SURROUND: 4 ohm - 8 ohm
SIN (rated power):
MAIN: 80 dB
Frequency response: 50 HZ-30 kHz {-3 dB)
Input sensitivity/impedance:
PHONO: 2.5 mV/47 kohm
EXTERNAL: 250 mV/15 kohm

System/SCNCQSS:

Center frequency: 60 Hz
LEVEL (VOL -30 dB): +8 dB
I FM tuner section
Frequency range: 8750-10800 MHZ (0.05 MHz steps)
Sensitivity: 1.8 pV (IHF usable)
SIN 26 dB: 15 pV
SIN:
MONO: 70 dB (75 dB, IHF)
Stereo separation at 1 KHz: 35 dB
Antenna terminal(s): 75 ohm (unbalanced)
I AM tuner section
Frequency range:
AM: 522-1611 KHz (9 kHz steps)
530-1620 kHz (10 kHz steps)
Sensitivity (SIN 20 dB): 500 pV/m
I Timer section
Clock: Quartz-lock type
Function: Play timer (1 time dayly), REC timer (1 time dayly),
Sleep (120 min., 30 min. intervals)
Setting: 1 minutea23 hours 59 minutes
(1 min intervals)
I General
Power consumption: 255 W
Power supply: 220 V, AC 50/60 Hz
Dimensions: 287 (W)/118.5 (H)/343.5 (D) mm
Weight: 50 kg
Notes: Specifications are subject to change without notice.
Weight and dimensions are approximate.

Sound processor: SH»EH60X. Tuner/Amplifier: SAvEHGOX, Compact disc changer: SL-EHBOX, Cassette deck: RS-EHSO,
Front speakers: * SB-V0958, Center speaker: *2 SB-PCGOX, Surround speakers: *2 SB~PSGOX

Notes: * ..... Made in PAES. *2 ..... Made in MESA

A WARNING

This service information is designed {or experienced repairtechnicians only and is not designed for use by the general public. It does not
contain warnings or cautions to advise non»technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or
repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

Panasonic®

© 1997 Matsushita Electric Industrial 00., Ltd.
All rights reserved. Unauthorized copying
and distribution is a violation of law.

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SA-EHBOX

l Contents

Before Repair .....
Protection Circuitry
Accessories
Location of Controls
Preparing for the Remote Contro
Installation
Connections
Setting the Time
Operation Check and

Main Component Replacement Procedures .............. 9 ~ 12
To Supply Power Source .........
About the Self-Diagnostic Mod

I Before Repair

Page
Schematic Diagram ........................................................ 15 ~ 28
Printed Circuit Board Diagram ................ 29 ~ 82
Type Illustration of lC's, Transistors and Diodes. . 32
Wiring Connection Diagram. 33
Terminal Function of ICs 34
35 ~ 40

Block Diagram ............
Replacement Parts List (Electrical) 41 ~ 43
Resistors and Capacitors.. . 44 ~ 47

Replacement Parts List

(Cabinet, Packing, Accessories and Jig/T col) ................. 48
Cabinet Parts Location 49
Packaging ................... 50

(1) Turn off the power supply, Using a 10 Q, 10 W resistor, connect both ends of power supply capacitors (C701, C703 and C702,

C704) in order to discharge the voltage.

(2) Before turning the power supply on, after completion of repair, slowly apply the primary voltage by using a power supply voltage
controller to make sure that the consumed current at 50/60 Hz in NO SIGNAL mode should be shown below with respect to supply

voltage 220 V.
Power supply voltage AC 220 V
Consumed current 50 Hz 140 ~ 400 mA

I Protection Circuitry

The protection circuitry may have operated if either of the following conditions is noticed:

* No sound is heard when the power is switched ONt
* Sound stops during a performance.

The functions of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
shorted, or if speaker systems with an impedance less than the indicated rated impedance of this unit are used.

If this occurs, follow the procedure outlined below:
1. Switch OFF the power.
2. Determine the cause of the problem and correct it
3. Switch ON the power once again.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first switched OFF and then ON again.