Sony slv ga 40 k service manual

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SLV'GA30/GA4OK/GA60/GA77K/GF90K-

RMT-V254/V254A

SERVICE MANUAL

PhoIo: SLV-GA77K

E Model
Tourist Model

SLV-GA60/GA77K/GF90K

Philippine Model

SLV-GASO/GA40K

s MECHANISM MT-V254
Refer to the SERVICE MANUAL of VHS
MECHANICAL ADJUSTMENT VI for
MECHANICAL ADJUSTMENTS. (9-921-647-11)
SPECIFICATIONS

MICROFILM

System
Colour system
PAL, MESECAM, NTSC 3.58, NTSC 443
RP output signal
UHF Channels 30 to 39
(B/G, D /K)
Aerial out
7S-ohm asymmetrical aerial socket

Inputs and outputs

LINE-1 IN and LINE-2 IN
VIDEO IN, phone Iack a each)
InpuI Signal: 1 Vprp, 75 ohms,
unbalanced, sync negative
AUDIO 1N, phono lack (2 each)
Input Ievel: 327 mes
Input impedance: more than 47 101:;th
LINE-1 OUT
VIDEO OUT, phone jack (1 each)
Output signal: I Vpip, 75 ohms,
unbalanced, sync negative
AUDIO OUT, phonoiack (2 each)
Standard output' 327 mVrms
Load Impedance: 47 kilohms
Output impedance: less than 10 1019th

G en eraI
Power requiremenis
110 - 240 V AC, 50/60 Hz
Power consumption
12 W
Operating temperature
5C lo 40C
Storage temperature
20°C to 60°C
Dimensions
Approx. 355 x102 x 284 mm (w/h/d)
including projecting parts and controls
Mass
Approx 18 kg

Supplied accessories

Remote commandvr (1)

R6 (SIZE AA) banenes (2)

Micmphone (1)

Aerial cable (1)

Audio/video cable (313110110 to 3-phono) (1)
Plug adaptor

I SLV-(SF90KMI only) (1)

Design and specificanons are Subjett to change

wh'mm (\Hrn

VIDEO CASSETTE PLAYER

SONY)

J

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SAFETY-RELATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARKAOR DOTTED LINEWITH
MARK A ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

SAFETY CHECK-OUT

After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.

1. Check the area of your repair for unsoldered or poorly-soldered 4.
connections. Check the entire board surface for solder splashes
and bridges.

2. Check the interboard wiring to ensure that no wires are 5.
"pinched" or contact high-wattage resistors. 6.

3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.

Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
Check the B+ voltage to see it is at the values specified.
Flexible Circuit Board Repairing

' Keep the temperature of the soldering iron around 270C
during repairing.

- Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

- Be careful not to apply force on the conductor when soldering
or unsoldering.