Sony PHA-3 / PHA-3AC Service Manual ▷ View online
PHA-3/3AC
5
2-4. GAIN-KNOB
2-5. MAIN BOARD BLOCK, COVER BLOCK
3
gain-knob
– Rear bottom view –
1
screw 1.7
u 5
1
screw 1.7
u 5
3
gain-knob
gain-knob
groove
groove
gain-knob
gain-knob
gain-knob
frame module
assy
assy
screw hole
screw hole
Note 2: When installing the gain-knob,
align the gain-knob hole and
the screw hole.
– Top view –
hole
hole
screw
hole
hole
screw
hole
hole
phillips
screwdriver
screwdriver
2
Insert a phillips screwdriver with a shaft
diameter of 2 mm or less into the gain-knob
groove and push the screwdriver in the
direction of arrow
A in order to push the
gain-knob out in the direction of arrow
B.
(Perform the same operation to remove
the remaining gain-knob)
Note
1: Prevent a short circuit by wrapping the
Phillips screwdriver with electrical tape,
etc. (A nonconducting screwdriver is
recommended)
A
B
– Rear bottom view –
3
MAIN board block
2
Firmly press the volume tip with your thumb,
and remove the MAIN board block.
1
screw
M2.0
u 21
– Bottom view –
4
cover block
PHA-3/3AC
6
2-6. REAR-PANEL, MAIN BOARD
2-7. LED BOARD
Note: When installing the MAIN board,
align the two switches and the
two
knobs.
switch
switch
knob
knob
5
Lift up the frame module block
in the direction of the arrow.
9
MAIN board
7
connector
(XP3)
6
connector
(XS1)
8
FFC (FFC1)
(XP2)
knob
knob
3
rear-panel
1
screw 1.7
u 8
2
screw
M1.7
u 5
2
screw
M1.7
u 5
4
two screw 2.0
u 6
4
screw 2.0
u 6
5
LED board
– Frame module block front view –
4
FFC (FFC1)
(XP3)
3
Draw the wire out of the hole.
2
Remove the LED board block
in the direction of the arrow.
1
screw 2.0
u 6
hole
PHA-3/3AC
7
2-8. SW BOARD
2-9. LITHIUM ION BATTERY PACK ASSY (BT1)
3
back control assy
5
SW board
2
two claws
– Frame module block rear view –
4
Draw the wire out
of the hole.
1
three screws 1.7
u 5
hole
2
Remove the lithium ion battery pack assy
(BT1) in the direction of the arrow.
4
lithium ion battery pack assy (BT1)
Note: When removing the lithium ion battery pack assy (BT1),
the lithium ion battery pack assy (BT1) cannot be reused.
Be sure to replace them with new parts.
1
Peel off the two adhesive sheets.
3
Draw the wire out of the hole.
hole
– Frame module block front view –
8
PHA-3/3AC
SECTION 3
EXPLODED VIEWS
1
9-885-198-65 CASE
ASSY
2
4-477-465-11 HI-RES
LABEL
3
9-885-198-84 GAIN-KNOB (GAIN, DSEE HX)
4
9-885-199-00 RING VOLUME KNOB
5
9-885-199-01 SHEET,
RING
6
9-885-198-99 KNOB, VOL INNER
7
9-885-198-86 KNOB
VOL
8
9-885-198-91 SCREW
M1.4X2
9
9-885-198-85 SCREW
1.7X5
10
9-885-198-87 SCREW
M2.0X21
11
9-885-198-89 SCREW
1.7X8
12
9-885-198-90 SCREW
M1.7X5
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
Note:
• -XX and -X mean standardized parts, so
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Items marked “*” are not stocked since
they are seldom required for routine ser-
vice. Some delay should be anticipated
when ordering these items.
vice. Some delay should be anticipated
when ordering these items.
• The mechanical parts with no reference
number in the exploded views are not sup-
plied.
plied.
• Color Indication of Appearance Parts Ex-
ample:
KNOB, BALANCE (WHITE) . . . (RED)
Parts Color Cabinet’s Color
3-1. CASE SECTION
• Rear bottom view
3
3
2
4
5
6
7
9
8
8
1
MAIN board section
8
8
12
12
11
9
10
not supplied
not supplied
not supplied
not supplied
not supplied
supplied with volume
included in Ref. No. SW3
on page 9
on page 9
B
C
B
A
A
C
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