Pioneer SX-828 Service Manual

<R42-232-0>
aady Whiual
AM/FM STEREO RECEIVER
S X-828/ kuw, Fvzw, FW
NOTE
MODEL SX-828 COMES IN THREE VERSIONS DISTINGUISHED AS FOLLOWS:
Round label on
KUW 120V only UL approved (U.S.A.)
FVZW 5-position selector FTZ approved (West Germany)
FW 5-position selector General export model
mo PIONEER’

Pioneer SX-828 Specifications

General

Power Output	50 watts per channel
Total Harmonic Distortion	0.5%
Tuning Range	FM, MW
Power Output into 8Ω	50 watts per channel
Damping Factor	40
Speaker Load Impedance	4Ω to 16Ω
Input Sensitivity	2.5mV (MM), 150mV (line)
Output	150mV (line)
Weight (lbs)	32 lbs
Semiconductors	32 transistors, 13 diodes

Summary

1. SPECIFICATIONS

2. FRONT PANEL FACILITIES

SELECTOR SWITCH

Selects the desired program source (AM, FM, PHONO, etc.).

3. CONNECTION DIAGRAM

4. BLOCK DIAGRAM

8. ALIGNMENT PROCEDURE

8.1 REQUIRED INSTRUMENT

Lists necessary test equipment for alignment procedures.

8.2 FM IF ALIGNMENT

Procedure for aligning the FM Intermediate Frequency stage.

8.3 FM TRACKING ALIGNMENT

Procedure for aligning FM tracking across frequencies.

8.4 FM MPX DECODER ALIGNMENT

Procedure for aligning the FM Multiplex decoder.

8.5 MUTING THRESHOLD LEVEL ALIGNMENT

Procedure for setting the FM muting threshold.

8.6 AM IF ALIGNMENT

Procedure for aligning the AM Intermediate Frequency stage.

8.7 AM TRACKING ALIGNMENT

Procedure for aligning AM tracking across frequencies.

9. SCHEMATIC DIAGRAMS, PCB PATTERNS AND PARTS LIST

9.1 UNIT CONNECTION DIAGRAM AND MISCELLANEOUS PARTS

Shows unit interconnections and lists general miscellaneous parts.

9.2 FM FRONT END (W11-043) (AWB-005)

PARTS LIST OF TUNER UNIT

FILTERS

9.4 MPX FILTER UNIT (AWX-009)

FILTER

9.5 HEAD AMP UNIT (W21-002)

PARTS LIST OF HEAD AMP UNIT

PARTS LIST OF AF UNIT

9.7 MAIN AMP UNIT (AWH-010)

PARTS LIST OF MAIN AMP UNIT

9.8 POWER SUPPLY UNIT (AWR-010)

PARTS LIST OF POWER SUPPLY UNIT

COILS

9.9 PROTECTION UNIT (W28-008)

PARTS LIST OF PROTECTION UNIT

CAPACITORS

RESISTORS

SEMICONDUCTORS

9.10 SWITCH UNIT (AWS-017)

PARTS LIST OF SWITCH UNIT

Detailed list of components for the Switch Unit.