Sansui RZ-1500 Service Manual

ST
SANSUI
RZIS00O—
COMPUTERIZED
STEREO RECEIVER
CAUTION
|
|
SERVICE
MANUAL!
NOTICE
For servicing RZ-1500, please refer to service manual for the
RZ-1000 with this manual, since most of the parts and circuits
employed in RZ-1500 are in common with the RZ-1000.
On the parts list, the changed parts are specified by "®" mark on
top of the Stock No. ,
1. Parts identified by the A symbol on the schematic diagram and the parts list are critical for safety.
Use only replacement parts that have critical characteristics recommended by the manufacturer.
2. Make leakage-current or resistance measurements to determine that exposed parts are acceptably insulated from the
supply circuit before returning the appliance to the customer.
SPECIFICATIONS
Audio section
Power output
Min, RMS, both channels driven, from 40 to 20,000 Fz with
no more than 0.09% total harmonic distortion
32 watts per channel into 8 ohms
DIN
38 watts per channel into 8 ohms.
Total harmonic distortion less than 0.09% at or below
rated min. RMS power output
Load impedance............. 4~16 ohms
Input sensitivity and impedance (1 kHz)
PHONO i csisccazssaseseseces 2.5 mV/47 kohms
Di teen clases . 200 mV/47 kohms
TAPE PLAY 150.mV/47 kohms
Frequency response (at | watt)
seusvesbvonvsnqwencsnanesengonnees 10 to 70,000 Hz,
+1 dB, —3 dB
Signal to noise ratio (short-circuit, A-network)
PHONO iscsapusnseatsrsedes 73 dB
CD, TAPE PLAY... 90 dB
Controls
BASS vvevvonedneunssvesesvonens +8 dB at 50 Hz
TREBLE cvsscsnsscngysenvnaves +7 dB at 10 kHz
LOUDNESS cassssssvessuxcs +10 dB at 50 Hz
Sa aaieaactntecete +6 dB at 10 kHz
(VOLUME: —30 dB position)
FM section
Tuning range... cee 88 to 108 Mt iz
Usable sensitivity
Mono JHE oo... 13.2 dBf (2.5 pV: T-100)
50 dB quicting sensitivity
SECPES cciccs conrwaticessiiuense 40 dBf
Signal to noise ratio (at 65 dBA
SLORCO. scxcqceceyeasapaxounsies 70 dB
Distortion (at 65 d8Bf
SlereO scseccanaassesadececisss less than 0.3% at 1,000 Hz
Stereo separation ............ 40 dB at 1,000 Fz
AM section
Tuning range... 530.to 1,600 kidz
Usable sensitivity (Loop antenna) .
Sidi rak caveasee see G tn tne 55 dB/m (562 pV/m)
Signal to noise ratio........ 40 dB
Others :
Power requirements........ 120/220/240V
50/60 Hz
For U.S.A. and Canada 120V (60 Hz)
Power consumption ........ 180 watts 220 VA Rated
280 walts Maximum
Dimensions ................. 430 mm (16-15/16") W
125 mm (4-15/167) FH
335 mm (13-1/47) D
Weight ccsicccsessscscavcesreacsene 6.6 kg (14.6 Ibs) net
7.9 kg (17.4 Ibs) packed
* Design and specifications subject to-changest withoul notice far ime
provements.
* Due to local laws and regulations, this unit sald in seme areas is not
equipped with variable voltage selector.

Sansui RZ-1500 Specifications

General

Brand	Sansui
Model	RZ-1500
Category	Stereo Receiver
Language	English

Summary

CAUTION

Safety Precautions for Servicing

Critical parts and insulation measurements for safe operation.

SPECIFICATIONS

Audio Section Specifications

Details on power output, distortion, sensitivity, and frequency response.

FM Section Specifications

Tuning range, sensitivity, signal-to-noise ratio, and distortion for FM.

AM Section Specifications

Tuning range, sensitivity, and signal-to-noise ratio for AM.

General Unit Specifications

Power requirements, dimensions, and weight of the stereo receiver.

NOTICE AND LISTS

Service Manual Usage Guidance

Instructions on using this manual with the RZ-1000 manual and parts list symbols.

Product Packing and Accessory Lists

Lists of packaging contents and supplied accessories.

PARTS LIST OF BOARD

F-6001 Main Board Component List

Detailed list of parts for the F-6001 main circuit board.

INTERIOR BLOCK DIAGRAM & TERMINAL FUNCTION OF IC

LA1266 IC Terminal Functions

Terminal details for the LA1266 IC used in FM/AM IF stages.

LA3410 IC Terminal Functions

Terminal details for the LA3410 IC used for MPX functions.

M5218L/M5218P IC Terminal Functions

Terminal details for the M5218L/M5218P Operational Amplifier ICs.

BLOCK DIAGRAM AND ADJUSTMENT

Overall System Block Diagram

Visual representation of the RZ-1500's functional blocks.

Power Amplifier Bias Adjustment

Procedure for adjusting bias current in the power amplifier stage.

FM Tuner Adjustment Procedures

Steps for adjusting FM IF coil, reference frequency, and technical hints.

AM ADJUSTMENT

AM IF and Tuning Adjustment

Steps for adjusting AM IF coil and tuning circuit.

DISPLAY PATTERN AND PIN ASSIGNMENT

CP3023 FL Display Pattern

Visual layout of characters and segments on the FL display.

CP3023 FL Display Pin Assignment

Mapping of pins to display segments and functions.

PARTS LOCATION ON BOARD

F-6001 Main Board Component Placement

Diagram showing the physical location of components on the main board.

PARTS LOCATION ON OTHER BOARDS

Component Placement on Various Boards

Diagrams showing component locations for tuner, speaker, master/tone, and power amp boards.

CIRCUIT SCHEMATICS AND IC FUNCTIONS

Overall Circuit Schematic Diagram

Comprehensive electrical schematic of the RZ-1500 unit.

LC7218 PLL Synthesizer Terminal Details

Terminal pinout and function description for the LC7218 PLL synthesizer.

TC9163N Analog Switch Terminal Details

Terminal pinout and function description for the TC9163N analog switch.

IC TERMINAL FUNCTIONS

TMP47C870N Control IC Terminal Details

Terminal pinout and function description for the TMP47C870N control IC.