Pioneer CT-W205R Service Manual

Service
ORDER NO.
RRV1540
STEREO DOUBLE CASSETTE DECK
CT-W205R
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type Power Requirement Remarks
CT-W205R
cs
Pv [ Oo | AC230-240V
[uv | oO | AC220-230V
LS ser]
Pp Oo
es)
SDXJ AC110V/120-127V/220V/230-240V With voltage selector
AC110V/120-127V/220V/230-240V With voltage selector
CONTENTS
1. SAFETY INFORMATION........... ccc eee reece neeee 2
2. EXPLODED VIEWS, PACKING AND PARTS LIST...... 3
3. BLOCK DIAGRAM ....... cece cee cneseesecensesteneeeecneees 10
As TEST: MODE wiiessccn dietitian tier Gael vpliedledesice 11
5. ADJUSTMENTS. ..00 cece cece ene ceereneetaetteseereee 12
6. SCHEMATIC DIAGRAMS .... cece eceeteeeetetees 19
7. PCB CONNECTION DIAGRAM ........0..eceseseeeereees 23
B..-PCB.PARTS LIST. .e.cctccvestesssteseesoeciesvsdesisieed ude dcescs 26
9. IC INFORMATION uu... ccc cee ce eceereeeeeeeeeenaetes 29
10. PANEL FACILITIES... cecccesesseseseseseeeeeseesetaetene 31
11. SPECIFICATIONS oc cccctcccciseatissccsssecesecninedeedetitecieeet 32
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S. A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087 Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Lane Crawford Place, Singapore 0923
© PIONEER ELECTRONIC CORPORATION 1996 T-SSG APR. 1996 Printed in Japan

Pioneer CT-W205R Specifications

Power

power requirements for U.K. and Australian models	AC 220 - 230 volts, 50/60 Hz
power requirements for U.S. and Canadian models	AC 120 volts, 60 Hz
power consumption	16W

Audio Specifications

wow and flutter	0.09% (WRMS)
frequency response for TYPE IV (Metal) tape	20 to 16, 500 Hz
frequency response for TYPE II (High/CrOz) tape	20 to 16, 000 Hz
frequency response for TYPE I (Normal) tape	20 to 16, 000 Hz

Signal and Noise

signal-to-noise ratio with Dolby NR OFF	More than 57 dB
noise reduction effect with Dolby B-type NR ON	More than 10 dB (at 5 kHz)
noise reduction effect with Dolby C-type NR ON	More than 19 dB (at 5 kHz)

Input and Output

input sensitivity for LINE (INPUT)	100 mV (Input impedance 68 kΩ)
output reference level for LINE (OUTPUT)	0.5 V (Output impedance 1.9 kΩ)
harmonic distortion	No more than 0.8% (at -4 dB: 160 nwb/m)

Weight and Dimensions

dimensions	420 (W) x 125 (H) x 250 (D) mm
weight for U.K. and Australian models	3.9 kg
weight for U.S. and Canadian models	3.8 kg

Summary

SAFETY INFORMATION

General Safety Precautions

Check leakage current to earth ground and all exposed metal parts for safety.

Product Safety Notice

Electrical and mechanical parts have special safety characteristics identified by a symbol.

EXPLODED VIEWS, PACKING AND PARTS LIST

Exterior and Packing Details

Lists external parts and packing details for various model types.

BLOCK DIAGRAM

TEST MODE

Entering and Exiting Test Mode

Procedures for entering and exiting the unit's test mode.

Main Test Mode Items

Overview of main test mode items, including SW check and speed check.

ADJUSTMENTS

Mechanical Adjustment Procedures

Procedures for door damping check, adjustment, and tape speed adjustment.

ELECTRICAL ADJUSTMENT

Adjustment Conditions and Notes

Prerequisites for electrical adjustments including head cleaning and warm-up.

JIGS AND MEASURING INSTRUMENTS

Required Tools and Equipment

Lists required jigs, measuring instruments like test tapes, oscilloscopes, and tools.

PLAYBACK SECTION

Head Azimuth Adjustment

Procedure to adjust head azimuth for optimal playback.

Playback Level Adjustment

Procedure to adjust playback level, critical for Dolby NR.

RECORDING SECTION

Bias Oscillator Adjustment

Procedure to adjust the bias oscillator frequency for recording.

Recording Bias Adjustment

Steps to adjust recording bias levels for different tape types.

PCB CONNECTION DIAGRAM

PCB PARTS LIST

List of Whole PCB Assemblies

Lists PCB assemblies for various models and their part numbers.

Contrast of PCB Assemblies

Details differences in construction for specific PCB assemblies.

IC INFORMATION

IC Pin Arrangement (Top View)

Diagram showing the pin layout of the PD5351A U-COM IC.

IC Pin Function

Table detailing pin numbers, names, I/O, and functions for the PD5351A IC.

PANEL FACILITIES

Power Switch Operation

Describes the POWER (STANDBY/ON) switch for different model regions.

Deck I Controls

Covers DECK I Rewind Auto Play, Music Search, Dolby NR switch, eject, and operation buttons.

Deck II Controls

Covers DECK II Rewind Auto Play, Music Search, eject, and operation buttons.

Other Panel Features

Includes Function display, Synchro copy buttons, Reverse mode switch, and Rec Level control.

SPECIFICATIONS

System Performance Specifications

Covers heads, motor, wow/flutter, winding time, frequency response, and SNR.

Input/Output and Distortion

Details input/output sensitivity, reference level, and harmonic distortion.

Unit Features and Subfunctions

Lists subfunctions like auto reverse, music search, copy modes, and tape selector.

Physical and Accessory Information

Covers miscellaneous specs like power, dimensions, weight, and accessories.