Technics SU 8055 Service Manual

Page 5

AC V T VM AF 05C

I ALIGNMENT POINTS K\ (<32)
0 GMT
Dummy Load

TAPE 2 up; I

Electrolyttc Capacttor

S k T r l
Bea ers ermna Rear Panel

Power Amplifier IC Heal SinIt

FL Peak-Power Meter
Ad uslmenl

e~--

ac unbalance
Adjustment

FL Peak-Power Meter
Adjuslment /
R617

FL Peak~Pewer
Meter Adj,

Front Panel

Dc unbalance
Adjustment

I HOW TO REMOVE THE POWER IC

, Remove the solder of power IC for both Lch and Rch.

, Remove the 3 setscrews (®~ ® in Fig. 6) used to fasten the heat sink from the center bracket.

, Remove the setscrew (@in Fig. 6) used to fasten the heat sink from the reinforece bracket.

. Remove the heat sink along with power IC in the direction of arrow A (Fig. 7),

, Remove the 2 setscrews ( @ in Fig. 7) used to secure the power IC on the heat sink, and then pull the power
lC in the direction of arrow B.

6. When mounting the power lC, apply silicone compound (or equivalent heat diffuser) to the back of power 1C,

and then follow the steps 1 ~ 5 reverselv.

macaw-a

HEAT SINK

/
llllllllll )

ill

REINFORCE
BRACKET

HEAT SINK
HEAT smx
l
l
I l
l
. POWER 1c
1
l
l a
4 I}
l ,
7,. 7 , . _e\ , 1 @
/ f PRINTED cuncun BOARD
power: rc \ A
(ICLOI)
CENTER BRACKET (ICLOY)
REINFO ERA KET
RCE C BRACKET

Fig. 6

Fig. 7