Technics SA-GX550 Service Manual

m HOW TO REPLACEMENT THE POWER IC AND REGULATOR
WA
Sy
Cut the joint.
CAUTION:
1. Along straight screwdriver cannot be used for removal or
mounting since its long grip interferes with the neighboring
P.C.B.(See Fig.1)
2. A short straight screwdriver may be used for removal, but
cannot be used for mounting because the limited space
in the unit will not allow sufficient tightening torque.
(See Fig.2)
xX
Locate the nipper to the
thin portion of the joint.
pas
Bottom chassis
ass’
<< ass y
eee
(Maen
A short straight screwdriver A long straight screwdriver
Fig.2
3. Insufficient tightening will cause poor heat dissipation from
the power IC and regulator transistor and, in the worst case,
may lead their thermal breakdown.
(See Fig.2)
2. After cutting the joints(6 portions), bend the portions of the
bottom chassis ass’y in the direction of arrow with pliers.
1. Cut the joints(6 portions) between bottom cover and
bottom chassis ass’y with nipper.
———— CAUTION ————
After replacing the power IC or regulator transistor, apply
a sufficient quantity of compound grease (RFKX0002)
between the heat sink and the power IC or regulator transistor.
(Rediation of power IC & transistor). OFFSET SCREWDRIVER
Power IC
eThe address of PROTO International Sales is as follows.
3. When checking the soldered surface of power IC, Offset screwdriver
perform as shown above.
= =
= s
Regulator transistors
we
4. When installing or removing the power IC or regulator
transistor, be sure to use an offset screwdriver.
Internatiotal Sales
Singapore, Indonesia,
International Sales Office Philippines, Korea, Hong
Stanley- Proto Industrial Tools Kong, Malaysia, China.
14117 Industrial Park Blvd. Stanley- Proto Asia Pacific
Covington, GA 30209 U.S.A. 12 Gul Drive
Fax: 706-786-4387 Singapore 2262
Phone: 706-787-3800 Fax: 65-861-3206
Phone: 65- 862-0883
Australia, New Zealand &
South Pacific Thailand
Stanley- Proto Industrial Tools Stanley- Proto Thailand Ltd.
P.O.Box 10 1017 Moo 13 Bangnatrad
400 Whitehorse Road Highway, Tambo! Bankaew
Nunrweding 3131 Amphur Bangplee
Victoria, Australia Samutprakarn, Thailand
Fax: 61-3-894-1173 Fax: 66-2-316-6071
Phone: 61 - 3- 878-9244 Phone: 66- 2~- 316-8655
5. After checking the power IC, upset the bottom cover and
align the ribs of the bottom cover to the lugs on the bottom
chassis ass’y.
6. After mounting the bottom cover on the bottom chassis
ass’y, fix it with a screw(XTB3+8J).
Front panel ass’y
Fig.1
¢The PROTO offset screwdriver No.34- % is recommended for use in the application above.
Japan
Stanley Works Japan
2-7-16 Hyakunin- Cho
Shinjuku-ku
Tokyo 160 Japan
Fax: 81-3-3360-8456
Phone: 81 - 3- 3360-8458
Mexico
Herramientas Stanley S.A.
DE C.V.
Apartado Postal 675
72030 Puebla, Pue, Mexico
Fax: 52-22-494-4880
Phone: 52- 22- 495-300
South & Central America,
Puerto Rico, The Caribbian
Stanley Inter- America
2101 N.W. 84th Ave.
Miami, Florida 33122
Fax: 305-594-4261
Phone: 305-591 - 3828
MFAN
MO
The
Models
§
If
the
cooling
light
(D929)
i
About
16cm
(A
long
straight
screwdriver
cannot
be
used.)
Europe
Stanley-
Proto
Europe
(Vo
Woodside,
Sheffield
fees
ae
|
539PD
England
Fax: 44-742-739-038
Phone: 44- 742-768-888
Canada
Stanley - Proto Canada
1100 Corporate Drive
Burlington, Ontario
Canada, L7L 5R6
Fax: 416-335-0075
Phone: 416-335-0075
[o> [2 |r [eo feo [rm feo [eo] rm |
~
oH ~ low
@
Middle East, Mediterranean
& Africa
Stanley- MEMA
Cory House The Ring
Bracknell Berkshire
RG 12 1A2
England
Fax: 44-344- 485-526
Phone: 44-344-51813

Technics SA-GX550 Specifications

General

Brand	Technics
Model	SA-GX550
Category	Stereo Receiver
Language	English