13
8
6
4
3
21
1
7
4. EXPLODED VIEWS
Page Former Type New Type
47
(1) COVER SECTION
! : Indicates modificated portion.
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Hardware (# mark) list is given in the last of
the electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
↑↑
Parts Color Cabinet's Color
!
6
4
21
1
Ref. No. Part No. Description RemarkRef. No. Part No. Description Remark
3 1-664-628-11 JACK FLEXIBLE BOARD
* 15 A-3317-431-A MAIN BOARD, COMPLETE
* 16 3-032-997-01 HOLDER (TR4)
3
1-676-340-11 JACK FLEXIBLE BOARD
* 15
A-3326-235-A MAIN BOARD, COMPLETE
24 1-676-339-11 MAIN FLEXIBLE BOARD
$
$
Ref. No. Part No. Description Remark
* 4
1-674-307-12 JACK BOARD
Ref. No. Part No. Description Remark
* 4 1-673-252-11 JACK BOARD
$
13
12
15
23
16
22
8
12
20
18
7
#2
#1
MG-250C-137
main flexible board
Q307
Q309
13
12
15
22
23
24
8
0
12
3
20
18
17
#2
#1
MG-250D-137
Q307
Q309
$
@
@
$
!
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