Sony TC-K677ES User Manual

Photo: TC-K677ES
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 (Permalloy head)
Playback head x 1 (LA head)
Motors Capstan motor x 1
(DC servo motor)
Reel motor x 1 (DC motor)
ASIST(mechanical drive) motor x 1
(DC motor)
Signal-to-noise ratio (at peak level)
oe ON ON
Type lV(Sony METAL-SLT/S)
Type II(Sony UX-S)
Total harmonic distortion
1.0% (with Sony METAL-SLT/S
cassette)
Frequency response (DOLBY NR OFF)
20—21,000 Hz (+3 dB, IEC)
20-—16,000 Hz
[+3 dB OVU (-4dB) recording]
20-19,000 Hz (+3 dB, IEC)
Type IV cassette
(Sony METAL-SLT/S)
Type II cassette
(Sony UX-S)
Type | cassette
| (Sony HF-S)
Wow and flutter
20—17,000 Hz (£3 dB,IEC)
pia
+0.09% W.Peak (IEC)
0.05% WRMS (NAB)
+0.14% W.Peak (DIN)
Dolby Laboratories Licensing Corporation.
ma} Dolby Laboratories Licensing Corporation.
“DOLBY” and the double-D symbol! 0] are trademarks of
Canadian Model
AEP Model
UK Model
E Model
TC-K570
US Model
AEP Model
TC-K670
US Model
Canadian Model
UK Model
TC-K677ES
Model Name Using Similar Mechanism
Line inputs Sensitivity 77.5 mV
(phono jacks) input impedance | 47 k ohms
CD DIRECT INPUT! Input impedance | 47k ohms
Outputs
Tape Transport
Mechanism Type
Inputs
0.32 V at a load
impedance of
47 k ohms
Over 10 k ohms
0-1.25 mW ata
load impedance
of 32 ohms
Line outputs
(phono jacks)
Rated output levei
Load impedance
Headphones
(stereo phone
jack)
Output level
General
Power requirements US,Canadian model: TC-K570: 120V AC 60Hz 18W
TC-K670, K677ES:120V AC 60Hz 19W
AEP, Germany model: 220VAC~ 50/60Hz
UK model: 240VAC~50/60Hz
E model: 120, 220, 240VAC~50/60Hz 18W
Power consumption 19 W
Dimensions Approx. 430 x 123 x 300 mm (w/h/d)
(17 x 4’ x 117 inches)
including projecting parts and controls
Weight Approx. 4.9 kg (10 ibs 13 oz)
Supplied accessories
Audio connecting cords (2)
Design and specifications subject to change without notice.
Note
This appliance conforms with EEC Directive 87/308/EEC
regarding interference suppression.
STEREO CASSETTE DECK
ONY.
Dolby noise reduction manufactured under license from

Sony TC-K677ES Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.76 cm/s
Tape Type	Type I, Metal
Frequency Response	20Hz - 20kHz (Metal Tape)
Dimensions	430 x 130 x 300 mm
Inputs	Line In
Outputs	Line Out

Summary

Specifications Overview

Audio Performance Specifications

General and Power Details

Safety Check-Out Procedures

Leakage Test Procedure

Procedure and limits for testing AC leakage from metal parts to earth ground.

Safety-Related Component Warning

Identifies critical components for safe operation requiring specific replacement parts.

Section 1: General Information

Identification of Front Panel Parts

Diagram and list of front panel controls and indicators.

Section 2: Disassembly Instructions

Mechanism Block Disassembly

Step-by-step instructions for disassembling the main mechanism.

Cassette Holder Disassembly

Section 3: Pin Description

IC701 Microcomputer Pinout

Detailed pinout and function description for the microcomputer IC.

Section 4: Adjustment Procedures

1. Mechanical Adjustments

Precautions, adjustment positions, and preparation for mechanical adjustments.

Tape Path Adjustment

Procedures for adjusting tape path components like heads and pinch rollers.

Mechanical Adjustment Details

Supply Pinch Roller Adjustment

Head Height & Declination Adjustment

Adjusting head height and declination for optimal tape path.

Erasehead and Torque Adjustments

Erasehead Azimuth and Height Adjustment

Procedures for adjusting erasehead azimuth and height.

Torque Measurement Standards

Pinch Roller Pressing Force Measurement

2. Electrical Adjustment Overview

Playback Adjustments

Procedures for adjusting playback levels and phase checks.

Record/Playback Head Azimuth Adjustment

Detailed procedure for azimuth adjustment of the record/playback head.

Electrical Adjustment Procedures

Speed and Bias Adjustments

Playback Level and Record Bias Adjustments

Adjusting playback output levels and record bias settings.

Record Level and Erase Current Adjustments

Record Level Adjustment Procedure

Procedure for adjusting recording levels using an AF OSC and VTVM.

Erase Current Adjustment Procedure

Method for adjusting erase current and confirming frequency.

Section 6: Exploded Views

6-1. Chassis Section Exploded View

6-2. Front Panel Section Exploded View

Front Panel Components

6-3. Mechanism Section 1 Exploded View

Mechanism Section 1 Parts

6-4. Mechanism Section 2 Exploded View

Mechanism Section 2 Parts

Section 7: Electrical Parts List