Pioneer DC-221Z User Manual

© PIONEER
Service
CIRCUIT DESCRIPTIONS
REPAIR & ADJUSTMENTS
aes = ORDER NO.
Re ARP-811-0
STEREO DOUBLE CASSETTE TAPE DECK AMPLIFIER
C-2212
DC-2202
(Silver Version of DC-2212Z)
e DC-221Z is the same as the DC-220Z except for the exterior design (color).
e Models DC-221Z and DC-220Z come in seven versions distinguished as follows:
Applicable model
DC-221Z DC-2202
fe) — AC120V only U.S.A
Power requirement Destination
Oo AC220V (240V)* European continent
ae AC240V (220V)* United Kingdom
AC110V/120V/220V/240V (Switchable) General market
AC240V (220V)* Australia
AC220V (240V)* West Germany
AC120V only Canada
*Change the primary wiring of the power transformer.
This service manual is applicable to the KU, HB, HE, S and YP types.
For
servicing
of
the
HEZ
type,
please
refer
to
the
additional
service
manual
(ARP-812).
For
servicing
of
the
KC
type,
please
refer
to
the
additional
service
manual
(ARP-813).
For
servicing
the
HE,
HB,
S,
and
YP types,
please
see page
57-58.
¢ Ce manuel d'instruction se refere au mode de réglage, en francais. (P45-P50)
Este manual de servicio trata del método de ajuste escrito en espaiiol. (P51-P56)
a
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, California 90801 U.S.A.
TEL: [800] 421-1404, (800) 237-0424
PRIONEER ELECTRONIC [EUROPE] N.V. Keetberglaan 1, 2740 Beveren, Belgium TEL: 03/775:28:08
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
TEL: (03) 580-9911
SA@® APR. 1985 Printed in Japan

Pioneer DC-221Z Specifications

General

Brand	Pioneer
Model	DC-221Z
Category	Amplifier
Language	English

Summary

1. SPECIFICATIONS

Amplifier and Tape Deck Specifications

Detailed technical specifications for amplifier and tape deck sections.

2. FRONT PANEL FACILITIES

Front Panel Controls and Indicators

Identifies and describes all front panel buttons, knobs, displays, and connectors.

3. DISASSEMBLY

Cassette Replacement Procedures

Step-by-step guide for disassembling the cassette decks.

4. PARTS LOCATION

Component Location Views

Diagrams showing the placement of parts on front, rear, and top panels.

5. EXPLODED VIEW

Exploded Parts Diagrams and Lists

Visual breakdown of components with associated part lists.

6. ELECTRICAL PARTS LIST

Component Parts Identification

Comprehensive list of electrical components with part numbers.

7. PACKING

Packing and Component Appearance

Information on packing materials and visual appearance of key components.

8. P.C. BOARDS CONNECTION DIAGRAM

Circuit Board Interconnection Diagrams

Diagrams illustrating how different circuit boards are connected.

9. SCHEMATIC DIAGRAM

Overall Circuit Schematic

Detailed electronic schematic of the entire unit.

10. BLOCK DIAGRAM

System Block Diagram

High-level functional blocks of the device and their interconnections.

11. CIRCUIT DESCRIPTIONS

Cassette Tape Deck Operation

Explains the functionality of the cassette tape deck sections, including Dolby NR and MS.

Integrated Amplifier Circuit Details

Describes the phono, graphic equalizer, power amplifier, and protection circuits.

12. ADJUSTMENTS

Mechanical Adjustments Procedures

Guides for mechanical adjustments like pinch roller pressure and reel torque.

Electrical Adjustments Procedures

Steps for electrical adjustments including head azimuth and frequency response.

13. FOR HE, HB, S, YP TYPES

Model Type Specific Variations

Details differences in parts and power for various model types.

14. SAFETY INFORMATION

General Safety Precautions and Leakage Test

Essential safety checks and precautions for users and technicians.

Product Safety Notice and Component Replacement

Information on safety-related components and their proper replacement.

Line Voltage Selection for Specific Models

Instructions for selecting the correct line voltage for HE, YP, and HB types.