Onkyo TA-2044

TA-2044
SERIAL NO. 3166
ONKYO
SERVICE
MANUAL
STEREO CASSETTE
TAPE DECK
MODEL TA-2044
Black and silver models
UOA, UOB
SAFETY-RELATED COMPONENT WARNING!! SPECIFICATIONS
COMPONENTS IDENTIFIED BY MARK “4 ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS Track Format: 4 tracks, 2 channels
LIST ARE CRITICAL FOR RISK OF FIRE AND Erasing System: AC erase
ELECTRIC SHOCK. REPLACE THESE COM- Tape Speed: 4.8 cm/sec. (1-7/8 i.p.s.)
PONENTS WITH ONKYO PARTS WHOSE PARTS Wow & Flutter: 0.04% (WRMS)
NUMBERS APPEAR AS SHOWN IN THIS MANUAL. Frequency Response: 20—16,000 Hz
| (30—15,000 Hz + 3 dB)
MAKE LEAKAGE-CURRENT OR RESISTANCE (normal position tape)
MEASUREMENTS TO DETERMINE THAT 20—17,000 Hz
EXPOSED
PARTS
ARE
ACCEPTABLY
IN—
(30—16,000
Hz
+
3
dB)
SULATED FROM THE SUPPLY CIRCUIT BEFORE (high position tape)
RETURNING THE APPLIANCE TO THE 20—19,000 Hz
CUSTOMER. (30—17,000 Hz + 3dB)
(metal position tape)
Signal-to-Noise Ratio: 60 dB (metal position tape,
Dolby NR out).
A noise reduction of 10 dB above
5 kHz and 5 dB at | kHz is possible
with Dolby B NR. A noise reduction
of 20 dB at 5 kHz is possible
with Dolby C NR.
Input Jacks: Line IN: 2
Minimum input level: SOmV
Input impedance: 50 kohms
ONKYO.
AUDIO COMPONENTS

Onkyo TA-2044 Specifications

General

Track System	4-track, 2-channel stereo
Noise Reduction	Dolby B
Type	Stereo cassette tape deck
Heads	2 (Play/Record)
Motor	DC servo motor
Tape Type	Normal, CrO2, Metal
Input	Line
Output	Line
Inputs	Line in
Outputs	Line out

Summary

Safety-Related Component Warning

Specifications

Features

Microcomputer Controlled Multi-Program System

Explains the microcomputer system for programmable functions, song location, and repeat playback.

Auto Space Rec Mute Button

Describes the auto-space recording feature for creating blank tape sections and entering REC-PAUSE mode.

Special Hard Permalloy Head

Details the permalloy head for wear resistance and improved performance with metal tapes.

2-Motor Tape Transport

Explains the DC servo motor capstan and dual motor system for stable and accurate tape transport.

Dolby B and C Noise Reduction

Discusses the Dolby B and C noise reduction systems and their effectiveness in reducing tape noise.

Service Procedures

Replacing the Lamps

Instructions for replacing lamps, including specific part numbers and a caution to unplug the power.

Instruction Resistance Measurement

Details resistance measurement procedures for insulation testing using an insulating-resistance tester.

Replacing the Hall ICs

Guides on replacing Hall ICs, noting differences in leg positions for DN6838 and DN838.

Tape Mechanism Exploded View

Packing View

Adjustment Procedures

Playback Torque Adjustment

Adjusts playback torque using R709 to achieve 35-55gcm.

Tape Speed Adjustment

Sets tape speed to 3,000-3,010Hz using a frequency counter connected to the line output.

Head Azimuth Adjustment

Adjusts head azimuth screws for maximum and same phase at channels L and R.

Playback Level Adjustment

Sets playback level to 580mV at TP401/TP402 using an AC voltmeter.

Meter Adjustment

Adjusts the meter to the 0dB indicator light on position using R606.

Bias Current Adjustment

Adjusts bias current to achieve the same level at REC/PB using R423/R424.

Record Level Adjustment

Sets record level to 580mV using R401/R402 with input volume at maximum.

Block Diagram

Schematic Diagram

Chassis Exploded View

Chassis Exploded View - Parts List

Tape Mechanism - Parts List

Printed Circuit Board Parts List