Sony TC-RX370 User Manual

TC-K370/RX370
SERVICE MANUAL
AEP Model
UK Model
Australian Model
TC-K370
US Model
Canadian Model
AEP Model
TC-RX370
Photo: TC-K370
* 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 OO and “HX PRO” are trademarks of Dolby
Laboratories Licensing Corporation.
Model Name Using TC-W370/W41 1
Similar Mechanism /WR511/WR570
TC-K370 | TCM-190VB12C
TC-RX370 | TCM-190RB12C
SPECIFICATIONS Tape Transport
Mechanism Type
4-track 2-channel stereo
Approx. 90 sec. (with Sony C-60
Recording system
Fast-winding time
Outputs
Line outputs Rated output level] 0.32 V ata load
cassette)
(phono
jacks)
impedance
of
Bias
AC
bias
47
k
ohms
Motors
Capstan
motor
x
1
(DC
motor)
Load impedance | Over 10 k ohms
Headphones 0.3 mW at a load
(stereo phone impedance of
jack) 32 ohms
Reel motor x 1 (DC motor)
Signal-to-noise ratio (at peak level)
Dolby NR switch OFF B-Type | C-Type
Cassette ON ON
Output level
General
Type | (Sony HF-S)
| Type lV (Sony METAL-SLT) | 58dB | 66dB | 73dB
Type |! (Sony UX-S) 57dB | 65dB
5a | oae | 7008.
Total harmonic distortion
1% (with Sony METAL-SLT cassette)
Frequency response (DOLBY NR OFF)
Type IV cassette
(Sony METAL-SLT)
| (Sony HF-S)
Wow and flutter
Inputs
recording]
Type Il cassette
30 - 15,000 Hz (+3 dB, IEC)
(Sony UX-S)
Type | cassette 30 - 14,000 Hz (+3 dB, IEC)
30 - 15,000 Hz (+3 dB, IEC)
30 - 13,000 Hz [+3 dB, OVU (-4 dB)
socal
40.13% W. Peak (IEC)
0.07% WRMS (NAB)
+0.18% W. Peak (DIN)
_ Line inputs
(phono jacks)
77.5 mV
input impedance | 47 k ohms
Sensitivity
Power requirements
Power consumption
Dimensions
Weight
US, Canadian model :120V AC, 60Hz
AEP, Germany, Australian model:
220-230V AC, (or 240V AC adjustable
by Sony personnel) 50 /60Hz
UK model :240V ‘AC, (or 220V AC adjustable
by Sony personnel) 50/60Hz
20 W
Approx. 430 x 123 x 287 mm (w/h/d)
(17 x 4% x 113% inches)
including projecting parts and controls
Approx. 3.9 kg (8 Ibs 10 02)
Supplied accessory Audio connecting cords (2)
Design and specifications subject to change without notice.
STEREO CASSETTE DECK
ONY.

Sony TC-RX370 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.8 cm/s
Heads	1 x record/playback, 1 x erase
Frequency Response (Normal Tape)	30Hz to 15kHz
Frequency Response (Chrome Tape)	30Hz to 16kHz
Frequency Response (Metal Tape)	30Hz to 17kHz
Signal to Noise Ratio (dolby off)	56dB
Type	Stereo Cassette Deck
Motor	DC servo motor
Wow and Flutter	0.08% WRMS
Inputs	Line in
Outputs	Line out
Dimensions	430 x 125 x 270 mm
Power Supply	220-230V, 50/60Hz
Output	0.5 V (line)

Summary

Specifications

Safety Checks and Leakage Testing

AC Leakage Test Procedure

Method for testing AC leakage from exposed metal parts to earth ground.

Disassembly Procedures

Case and Front Panel Disassembly

Mechanism Deck Removal

Adjustments and Calibration

Mechanical Adjustments Procedures

Steps for mechanical adjustments, including torque measurement and azimuth alignment.

Electrical Adjustments Procedures

Guidelines for electrical adjustments, including playback level and tape speed.

Phase and Playback Level Checks

Procedures for phase checking and adjusting playback level using test tapes.

Tape Speed Adjustment and Verification

Steps for adjusting and verifying tape speed using a frequency counter.

Bias and Record Level Adjustments

Procedures for adjusting bias consumption current, record bias, and record level.

Electrical Parts List