Pioneer CT-91 - Service Manual

Q) PIONEER’
The future of sound and vision.
Service
SALES IED|
STEREO CASSETTE DECK
e This manual is applicable to the CT—91/KU/CA type.
ORDER NO.
ARP1656
CONTENTS
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2. PANEL FACILITIES Cree rececececccccesseneesccccsecceeseces 3
3, EXPLODED VIEWS AND PARTS LIST «+--+ 7
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5. SCHEMATIC DIAGRAM Seer cneseececcetoverecseravceeas 15
6. P.C. BOARDS CONNECTION DIAGRAM -----19
7, ELECTRICAL PARTS LIST ev eceencecccerseserenncsece 23
8. ADJUSTMENTS PYEPPeSTETTeTePee reece eer re errr reer r eerie 28
9, SAFETY INFORMATION De ceererecesescencereececesenes 33
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. 505 Cochrane Drive, Markham, Ontario L3R 8E3 Canada
PIONEER ELECTRONIC [EUROPE] N.V.. Keetberglaan 1, 2740 Beveren, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia TEL: [03] 580-9911
© PIONEER ELECTRONIC CORPORATION 1988 dig cen? ance waa We can

Summary

1. Specifications

2. Panel Facilities

Control Panel Overview and Features

Detailed description of all controls, buttons, selectors, and indicators on the front panel.

3. Exploded Views and Parts List

Exterior Parts Identification

Identifies external parts of the cassette deck with part numbers and descriptions.

Mechanism Unit Parts List

Detailed list of parts for the cassette deck's mechanism unit.

4. Packing

5. Schematic Diagram

6. P.C. Boards Connection Diagram

7. Electrical Parts List

Electronic Component Listings by Unit

Lists electronic components categorized by internal units like FL, OSC/HX, Timer, Control.

8. Adjustments

Mechanism Adjustment Procedures

Steps for adjusting tape running, azimuth, speed, and air damper.

Electrical Adjustment Procedures

Detailed procedures for electrical adjustments like bias, level, and meter calibration.

9. Safety Information

Safety Precautions and Leakage Current Check

Essential safety checks, including leakage current measurement, for user and technician protection.

Product Safety Notice and Component Replacement

Information on special safety characteristics of parts and warnings about using substitute components.

Pioneer CT-91 Specifications

General

Type	3-head, single compact cassette deck
Track System	4-track, 2-channel stereo
Tape Speed	4.8 cm/s
Frequency Response	15Hz to 21kHz (Metal tape)
Weight	9.2 kg
Inputs	Line in (RCA)
Heads	1 x record, 1 x playback, 1 x erase
Motor	1 x capstan, 1 x reel
Tape Type	CrO2, Metal
Total Harmonic Distortion	0.5%
Dimensions	420 x 130 x 310 mm
Outputs	Line output, Headphones