Pioneer CT-W720R Service Manual

@) PIONEER’
The Art of Entertainment
Service
GAL
ENIED
comm
STEREO DOUBLE CASSETTE DECK
CT -WsoeR
CT-WsS20R
CT -W'720R
e Refer to the service manual ARP2547 for CT-W801R AND
CT-W701R.
CT-W802R, CT- aa ae AND CT-W720R HAVE THE FOLLOWING:
Power Requirement
CT-W802R | CT-W820R ti W720R
® This manual is applicable to the following: CT-W802R/KU, KC and_ SD;
CT-W820R/HB and HEM; CT-W720R/HEM.
AC220 — 230V, 230 — 240V (switchable) *
AC110V, 120 — 127V, 220V, 240V (switchable)
* Change the connection of the power transformer’s primary wiring.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE INC. P.O. Box 1760, Long Beach, California 90801 U.S.A
PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L3R OP2 Canada BENE ay atte ge
PIONEER ELECTRONIC [EUROPE] N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium cs Fb )
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911 b
© PIONEER ELECTRONIC CORPORATION 1993 SK FEB, 1993 Printeed in Japan

Pioneer CT-W720R Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.76 cm/s
Weight	4.5 kg
Type	Double Cassette Deck
Motor	DC Motor
Output	0.5V (line)
Tape Type	Metal
Signal to Noise Ratio	72dB (Dolby C)

Summary

Contrast of Miscellaneous Parts

For CT-W802R/KU, KC, SD, CT-W820R/HEM and HB

Exploded View and Packing

Exploded View

Visual representation of internal components and their assembly.

Schematic Diagrams

Schematic Diagram Overview

Presents circuit diagrams for various units of the stereo double cassette deck.

Block Diagram

Block Diagram Overview

Illustrates the functional blocks of the audio system's stereo double cassette deck.

PCB Parts List

PCB Parts List Details

Adjustments

Mechanical Adjustment

Covers door damping and tape speed adjustments for the stereo double cassette deck.

Electrical Adjustments

Playback Sections

Details azimuth and playback level adjustments for the stereo double cassette deck.

Recording Sections

Covers bias, recording level, and auto BLE adjustments for the stereo double cassette deck.

IC Descriptions

9.1 PD4381A (IC501) Overview

9.2 LC7570 (IC510) Functions

System Control and Tape Functions

Circuit Descriptions

Sound EQ Circuit Purpose, Operation, Features

Panel Facilities

Front Panel Controls Overview

Specifications

System and Subfunction Specifications