Technics SA-CH750

Service
Manual
Tuner
Amplifier
Tuner
Amplifier
SA-CH750
Colour
eFor (E), (EB), (EG) areas
SL-CH750 SH-CH750
Remote Control
Transmitter
+
| (Kyi cent acces Black Type
Areas
Suffix for
Model No. Colour
SB-CH750A/CH755 RS-CH750 SA-CH750 SB-CH750A/CH755
eFor (GC), (GN) areas
Great Britain
Remote
Control
SL-CH750
SH-CH750
Germany
and
Italy
(k)
Transmitter
Asia, Latin America,
Middle Near East and
Africa
Oceania
System: SC-CH750
SB-CH750 RS-CH750 SA-CH750 SB-CH750
Because of unique interconnecting cables,
hen a component requires service, send
r bring in the entire system.
SPECIFICATIONS
(DIN 45 500) ie ee Fe ows,
@ Main Amp. Section
Power output
DIN 1 kHz THD 1%
both channel driven
For (GC), (GN) areas
SFP,mode1kHzTHD1% _ [toevn nail AN TUNER SECTION
MAIN | Eee NEE ncy range
SURROUND 2x5 W (8Q) MW
Total harmonic distortion For (E), (EB), (EG), (GN) areas 522-1611 kHz (9 kHz steps)
Rated power at 1 kHz 1% (6) 530-1620 kHz (10 kHz steps)
Half power at 1 kHz 0.09% (6Q) For (GC) area 531-1602 kHz (9 kHz steps)
Load impedance 530-1600 kHz (10 kHz steps)
MAIN 6-80 LW
SURROUND 8 For (E), (EB), (EG), (GN), areas 9 144~—288 kHz Q kHz steps)
S/N (rated power) 84 dB For (GC) area 153-279 kHz @ kHz steps)
Frequency response 40 Hz—30 kHz (—3 dB) Sensitivity (S/N 20 dB)
MW 500 uVv/m
m@ FM Tuner Section LW 50 uV
Frequency range 87.50 MHz—108.00 MHz (0.05 MHz steps)
Sensitivity 1.8 pV (IHF, usable) @ Timer Section
S/N 26 dB 1.5 yV (75Q) Clock Quartz-lock type
S/N Function 24-hour programmable; Play trmer (1 time)
MONO 70 dB (75 GB, IHF) Rec trmer (1 time)
Stereo separation at 1 kHz 35 dB Sleep (120 min. 1 min. intervals)
Antenna terminal(s) 75Q (unbalanced) Setting 1 minute—23 hours 59 minutes (1 min. intervals)
Sound processor | Tuner amplifier | Compact disc player | Cassette deck Speakers
*SB-CH750A ............ (E), (EB), (EG) areas
SC-CH750 SH-CH75' SA-CH750 SL-CH750 RS-CH750 *SB-CH795 cesccds 2 esate aa Baytthes Switzerland only
SB-CH750 ................ (GC), (GN) areas
*Magie in PAES
Technics

Technics SA-CH750 Specifications

General

Brand	Technics
Model	SA-CH750
Category	Amplifier
Language	English

Summary

SPECIFICATIONS

Main Amplifier Section

Details amplifier power output, load impedance, and total harmonic distortion.

FM Tuner Section

Covers FM frequency range, sensitivity, and signal-to-noise ratio.

AMLW Tuner Section

Outlines AM and LW frequency ranges and sensitivity.

Timer Functions

Describes clock and timer functions like programmable timers and sleep.

GENERAL INFORMATION

Power Supply and Specifications

Details power consumption, voltage, and current specifications.

Physical Dimensions and Weight

Lists the physical dimensions and weight of the unit.

Important Notes and Disclaimers

Contains important notices regarding specifications and measurements.

REPAIR AND MAINTENANCE

Before Repair Procedures

Instructions for safely discharging capacitors and performing initial power-up checks.

Protection Circuitry Operation

Explains causes of protection activation and the procedure to reset it.

ACCESSORIES

Included System Accessories

Lists all accessories included in the package, such as cords and batteries.

LOCATION OF CONTROLS

Front Panel Controls

Identifies and explains the function of buttons and knobs on the front panel.

Front Panel Display Indicators

Details the meaning of various indicators shown on the unit's display.

COMPONENT STACKING

Horizontal and Vertical Arrangements

Illustrates component stacking options for different system layouts.

CONNECTING THE FLAT CABLE AND FM ANTENNA

Initial Cable Setup

Guides on connecting the flat cable and the FM indoor antenna.

CONNECTING THE LWMW ANTENNA AND SPEAKERS

Speaker and Antenna Cable Connections

Instructions for connecting LW/MW antenna, speaker cables, and surround speakers.

CONNECTING THE AC POWER SUPPLY

Final Power Connection

Details the procedure for connecting the AC power cord to the unit.

SETTING THE TIME OF DAY

Time Setting Procedure

Step-by-step guide to set the current time on the unit.

DISASSEMBLY INSTRUCTIONS

Cabinet and Front Panel Removal

Details procedures for removing the outer cabinet and front panel assembly.

PCB and Rear Grill Removal

Outlines steps for removing the FL P.C.B., rear grill, and associated components.

SCHEMATIC DIAGRAM - MAIN, POWER TRANSFORMER (A)(B) AND AC IN TERMINAL CIRCUIT

Main Circuit and Power Supply Schematics

Provides detailed schematics for the main, power transformer, and AC input terminal circuits.

SCHEMATIC DIAGRAM - INPUTOUTPUT TERMINAL CIRCUIT

InputOutput Terminal Circuit Schematic

Details the schematic for the input/output terminal circuit.

SCHEMATIC DIAGRAM - TUNER CIRCUIT

Tuner Circuit Schematic Diagram

Presents the schematic diagram for the tuner circuit.

PRINTED CIRCUIT BOARD DIAGRAM

Main and Tuner PCB Layouts

Shows the printed circuit board layouts for the main and tuner sections.

BLOCK DIAGRAM

System Block Diagram Overview

Illustrates the overall system architecture and signal flow.

FUNCTION OF IC TERMINALS

IC Terminal Function Descriptions

Lists and explains the function of terminals for key integrated circuits.

REPLACEMENT PARTS LIST

Component Part Numbers and Descriptions

Provides a comprehensive list of replaceable parts with their part numbers.