Sony TC-K222ESG Service Manual

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol 99 are trademarks of
Dolby Laboratories Licensing Corporation.
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US Model
Canadian Model
UK Model
West Germany Model
TC-K850ES
E Model
TC-K222ESG
TC-K850ES
Model Name Using Similar Mechanism
Tape Transport Mechanism Type TCM - 200D2
SPECIFICATIONS
Recording system 4-track 2-channel stereo Outputs
Bias AC bias Line outputs Rated output level | 0.44 V (—5 dB) at a
Heads Erase head x1 (S & F head) (phono jacks) load impedance
Recording head x 1 (Permalloy head)
Playback head x 1 (LA head)
Motors Capstan motor x 1
(direct drive linear torque BSL motor)
Reel motor x 1 (DC motor)
DC motor x 1
Wow and flutter 0.024% WRMS (NAB), +0.065% (DIN)
Fast-forward and rewind time
Approx. 90 sec. (with C-60 cassette)
Frequency response (DOLBY NR OFF)
TYPE IV cassette 15-21,000 Hz (+3 dB, DIN)
(Sony METAL-ES) 15~16,000 Hz (OVU recording)
TYPE Il cassette 15~-19,000 Hz (+3 dB, DIN)
(Sony UX-S)
TYPE I cassette 15-17,000 Hz (+3 dB, DIN)
(Sony HF-S)
-Signal-to-noise ratio (at peak level)
asset NR suite NR switch B-TYPE C-TYPE
ON ON
—— IV
(Sony METAL-ES) 61 dB 70 dB 76 dB
Total harmonic distortion
1.0% (with Sony METAL-ES cassette)
Sensitivity 77.5 mV (—20 dB)
Input impedance 50k ohms
Inputs
Line inputs
(phono jacks)
CD DIRECT input
(phono jacks)
47k ohms
Load impedance Over 10k ohms
Output level 0-2.5 mW at a load
: impedance of 32
ohms
Headphones
(stereo phone jack)
General
Power requirements West Germany model:
220 V AC, (or 240 V AC adjustable
by Sony personnel), 50/60 Hz
US, Canadian model :
120 V AC, 60 Hz
UK model :
240 V AC (or 220 V AC adjustable
by Sony personnel), 50/60 Hz
E model :
120, 220, or 240 V AC adjustable,
50/60 Hz
Power consumption 23 W
Dimensions Approx. 430 x 135 x 350 mm (w/h/d)
(17 x 53/4, 137/, inches)
Approx. 470 x 135 x 350 mm (w/h/d)*
(184/, x 53/4, x 1374 inches) *
Weight Approx. 6.9 kg (15 Ibs 4 02)
Approx. 7.9 kg (17 Ibs 7 o2z)*
* including projecting parts. controls and wooden side paneis
Supplied accessory Audio connecting cord (2)
Optional accessory Wireless remote control unit RM-J701
Design and specifications subject to change without notice.
Note
This appliance conforms with EEC Directive 87/308/EEC regarding
interference suppression.
STEREO CASSETTE DECK
SONY.

Sony TC-K222ESG Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.8 cm/s
Motor	DC Servo Motor
Weight	6.5 kg
Type	Cassette Deck
Heads	3 (Record, Playback, Erase)
Tape Type	Type I, Metal
Noise Reduction	Dolby B, C
Frequency Response	20 Hz - 20 kHz
Wow and Flutter	0.04% WRMS
Input	Line In
Output	Line Out, Headphones
Dimensions	430 x 125 x 350mm

Summary

General

Location and Function of Controls

Identifies and describes the controls on the front panel.

Disassembly

Adjustments

Mechanical Adjustments

Details procedures for mechanical adjustments like pinch roller force.

Electrical Adjustments

Outlines electrical adjustments for various parameters.

Diagrams

Block Diagram

Overall block diagram of the cassette deck system.

Semiconductor Lead Layouts

Pin layouts for various semiconductor components.

Circuit Boards Location

Shows the physical location of different circuit boards.

IC Block Diagrams

Internal block diagrams for integrated circuits.

Printed Wiring Boards

Layouts of the printed wiring for main and panel sections.

Schematic Diagrams

Detailed schematic diagrams for main and panel circuitry.

Exploded Views

Overall Section

Exploded view of the entire unit and parts list.

Panel Section

Exploded view of the panel assembly and parts.

Mechanism Section (1)

Exploded view of mechanism parts (part 1).

Mechanism Section (2)

Exploded view of mechanism parts (part 2).

Electrical Parts List