Sony TC-K890ES Service Manual

TC-K222ESA/K890ES
SERVICE MANUAL
Photo :TC-K890ES
Dolby noise reduction and HX Pro headroom extension
manufactured under license from Dolby Laboratories Licensing
Corporation. HX Pro originated by Bang & Olufsen.
*"DOLBY”, the double-D symbol 00 and "HX PRO” are
trademarks of Dolby Laboratories Licensing Corporation.
SPECIFICATIONS
Recording system 4-track 2-channel stereo
Fast winding time Approx. 90 sec. (with Sony C-60 cassette)
Bias AC bias
Heads Erasing head x 1 (S&F head)
Recording head x 1 (LA head)
Playback head x 1 (LA head)
Motors Capstan motor x 1 (direct - drive linear torque
BSL motor)
Reel motor x 1 (DC motor)
+ 0.04% W.Peak (IEC)
0.024% W.RMS (NAB)
+ 0.065% W.Peak (DIN)
Signal-to-noise ratio (at peak level)
Type |
Type IV (Sony Type Il
Metal-S/Select) | (Sony UX-S) (Sony HF-S)
Measured at peak level weighted without NR. The S/N is improved by about
15 dB at 500 Hz and by about 20 dB about 1 kHz with Dolby-C NR on, and by
5 dB at 1 KHz and by 10 dB about 5 kHz with Dolby-B NR on.
Wow and flutter
Cassette
(Dolby NR OFF)
0.4% (with Sony Type |, 160 nWb/m,
315 Hz, 3rd H.D.)
1.3% (with Sony Type IV, 250 nWb/m,
315 Hz, 3rd H.D.)
Frequency response (DOLBY NR OFF)
Type IV cassette 20 - 22,000 Hz (+3 dB, IEC)
(Sony Metal-S/Select). | 20 - 16,000 Hz [+3 dB, (-4 dB recording)]
Type
I!
cassette
“0
verre
(Sony
UX-S)
20
-
20,000
Hz
(+3
dB,
IEC)
)
Harmonic distortion
Type | cassette
Type eassete {a0 17.000 He (498, EC
(Sony HF-S)
Line inputs Sensitivity 0.16 V
(phono jacks) Input impedance 47 k ohms
CD DIRECT. INPUT Input impedance 47k ohms
Inputs
Model Name Using Similar Mechanism | TC-K222ESG
Tape Transport Mechanism Type TCM-200D10
US Model
Canadian Model
Germany Model
. TC-K890ES
E Model
TC-K222ESA/K890ES
Outputs
Line outputs
(phono jacks)
Rated output level 0.5 V at a load impedance
of 47 k ohms
Load impedance Over 10 k ohms
Headphones Output level 0-3 mWata load
(stereo phone jack) impedance of 32 ohms
General
Power requirements
US, Canadian model:
120V AC, 60Hz
Germany model:
220 —230V AC (or 240V AC
adjustable by Sony personal),
50/60 Hz
E model:
120, 220 or 240V AC adjustable,
50/60 Hz
Power consumption 23 W
Dimensions Approx. 470 x 135 x 350 mm (w/h/d)
(188% x 53/4 x 137/s inches)
including projecting parts and controls
Weight Approx. 8.1 kg (17 Ibs 14 02)
Supplied accessories Audio connecting cords (2)
Screws (4)
Wireless remote commander RM-J701 (1)*
Sony SUM-3 (NS) batteries (2)*
“Not supplied with model for Canada and European countries.
Design and specifications are subject to change without notice.
Note
This appliance conforms with EEC Directive 87/308/EEC regarding
interference suppression.
STEREO CASSETTE DECK
ONY.

Sony TC-K890ES Specifications

General

Track System	4-track, 2-channel stereo
Tape Type	Type I, Type II, Type IV
Type	Cassette Deck
Heads	3 (Record, Playback, Erase)
Frequency Response	20Hz to 20kHz (Metal tape)
Wow and Flutter	0.04% (WRMS)
Inputs	Line In
Outputs	Line Out, Headphone
Dimensions	430 x 320 mm

Summary

Section 1 Diagrams

Section 2 Electrical Adjustments

Tape Speeds/Wow Checking

Specified Recording Position

Torque Adjustment

Record/Playback Heads Vertical Adjustment

Adjusting head vertical alignment for optimal playback.

Playback Level Adjustment

Adjusting playback output levels for specified channels.

Erase Current Adjustment

Adjusting the erase head current for proper operation.

Bias Consumption Current Adjustment

Adjusting bias current consumption before recording bias adjustment.

Bias and Recording Level (HX PRO ON) Adjustment

Adjusting bias and recording levels with HX PRO ON.

Metal Bias Adjustment

Adjusting bias specifically for metal tape types.

Calibration and Level Meter Adjustment

Procedure (Oscillation Output Level)

Procedure (Level Meter Adjustments)

Section 3 Exploded Views

Chassis Section

Panel Section

Mechanism Section 1 (TCM-200D10)

Mechanism Section 2 (TCM-200D10)

Section 4 Electrical Parts List