Onkyo TXSR 702 Service Manual

Page 1

ONKYO SERVICE MANUAL

AV RECEIVER
MODEL TX-SR702/ E

%

Black, Golden and Silver models

TX-SR702/ E

Ref. No. 3826
092004

BMDD,BMDC,SMDC 120V AC, 60Hz
BMPP,SMPP,BMPA,GMPA,GMPT 230-240V AC, SOHZ
GMWT 120/220-230V AC, 50/60Hz
GMGK,GMGQ,GMGR 220-230V AC, 50Hz

warslm

SAFETY-RELATED COMPONENT

WARNING

THE MARK A FOUND ON SOME COMPONENT
PARTS INDICATES THE CRITICAL FOR RISK OF
FIRE AND ELECTRIC SHOCK.

WHEN REPLACING, BE SURE TO USE PARTS OF

IDENTICAL DESIGNATION.

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.

ONKYO.

IMAGINATIVE SIGHT & SOUND

RC-588M

Page 52

IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS
BU1924FS (FtDS Decoder)

8th Switched
capacItor fitter

co mparalor

ffl

PLL
1 187.5Hz

Birpnase
decoder

Differential
decoder

V

Measurement
circuit

FICLK

I

QUAL

I

RDATA

BLOCK DIAGRAM
MUX
antiraliasing
Vref ; filter
V001 (5) 7'I'7
I] Anang
Power5uppIy
V551 (6)
J
PLL
57KHZ
V00? (12)) RDS/ARI
DigitaI
Power supply
11) I
V552 I
E]
Reference
clock
(13) rl (14)
XI '- xo

TERMINAL DESCRIPTION

T1 T2

Pin No. Pin name Description
1 QUAL Output terminal of demodulator quality signal.
2 RDATA Output terminal of demodulator data.
3 Vret Input terminal of reference voltage.
4 MUX Input terminal of composite signal.
5 Voo1 Analog power supply.
6 V551 Analog power supply.
7 V553 Ground.
8 CMP Input terminal of comparator.
9 T2 Input terminal for test mode.
10 T1 Input terminal for test mode.
11 V552 Digital power supply.
12 Vooz Digital power supply.
13 XI Connect to oscillator.
14 X0 Connect to oscillator.
15 (N.C.)
16 RCLK Output terminal of demodulator clock.