Disassembly Procedures - Yamaha p1150 Service Manual

P1
1
50/PI 250/P21
50/P2250
DISASSEMBLY
PROCEDURES
• Disconnect each connector
as
necessary for the part
•
Electric
charge
may
be
accumulated
at
the electro-
removal.
lyfic
capacitor of the
power
supply. Discharge
it
by
shorting across the capacitor terminals
with
a resistor
of
8J2,
100W
or
so.
FLOW CHART
I
®
Top
cover
removaT]
[
0
Filter
removal
~\
OUTPUT
circuit
board check
r
Idling
current
adjustment
|
DC
offset
check
1
Front panel
aaembly
removal
|
[
d)
PA
unit
removal
|
PAA
(PAB)
circuit
board removal
|
Cooling
Fan removal
|
|
d
Rear panel
assembly removal
I
®
OUTPUT
circuit
board removal|
Shield bracket removal
I
INPUT
circuit
board removal
®
TOP
COVER REMOVAL/GRILLE REMOVAL
® FRONT PANEL ASSEMBLY REMOVAL
9