• IC Block Diagrams
IC301
CXA2500N-T4
(1)
CABINET SECTION
SECTION 7
EXPLODED VIEWS
• 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.
• Accessories and packing materials are 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
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
– 17 –
– 18 –
28
13
15
16
22
1
7
6
10
11
MIC901
MT-30D-118
9
8
5
4
1
26
2
26
26
3
25
24
23
21
20
1
19
30
17
SP901
26
19
32
not
supplied
31
29
• Abbreviation
1E: No indication of country of origin
CND: Canadian model
CH: chinese model
24
23
21
20
19
18
17
16
14
15
13
1
2
4
5
6
7
8
9
11
10
12
AGC
GCA
GCA
MIC
MIC
AMP
AMP
LINE
LINE
PB
PB
REC
REC
REF
AGC DET
PB/
REC
TAPE/TUNER,
NORM/METAL
GND
MIC IN B
PB NF B
PB OUT A
PB EQ SW B
TUNER IN B
LINE OUT B
REC DRIVE IN B
VCC
REC DRIVE OUT B
PB/REC SEL
REF
MIC IN A
PB NF A
PB OUT A
PB EQ SW A
TUNER IN A
LINE OUT A
REC DRIVE IN A
AGC TIME
CONSTANT
REC DRIVE OUT A
T
UNER, TAPE SEL
22
3
PB PRE IN B
PB PRE IN A
16
15
14
13
12 11
10
9
1
3
4
5
6
7
8
+
–
+
–
MUTE
POWER OFF
RIPPLE
FILTER
DC
DC
IN1
NF1
VB1
PW
BASE
VRF
OUT1
VCC
IN2
NF2
VB2
BY2
M
UTE
BY1
OUT2
GND
2
18 17
16
15 14
13
12
11
10
1
2
3
4
5
6
7
8
9
+
–
+
–
+
–
BIAS
RF OUT
RFC
BASE OUT
MUTE OUT1
IN1
NF1
PWR OUT1
VCC
STNBY
PWR MUTE
INVOUT
NFB
MUTE OUT2
IN2
NF2
PWR OUT2
GND
RIPPLE FILTER
MUTE
PWR1
PWR2
INV
IC302
TA7688F-SO
IC303 BA6640F-E2
1
3-318-382-31 SCREW (1.7), TAPPING
2
3-345-648-51 SCREW (M1.4), TOOTHED LOCK
*
3
A-3021-325-A MAIN BOARD, COMPLETE
4
3-924-741-01 TERMINAL, PLUS
5
3-936-973-01 TERMINAL, MINUS
6
3-924-744-01 SPRING(CLAW DETECTION),TENSION
7
3-924-743-01 CLAW, ERASING PROTECTION
8
3-334-565-41 SCREW (B1.7), TAPPING
9
3-924-745-01 BAR, GROUND
10
3-924-740-01 HOLDER, MICROPHONE
11
3-924-763-01 CUSHION (MICROPHONE)
13
3-704-197-33 SCREW (IB LOCK)
15
3-019-364-81 CABINET (FRONT) (US, CND, AEP, E, CH)
15
3-019-364-91 CABINET (FRONT) (1E)
16
3-924-739-01 SPRING, CASSETTE
17
X-3379-233-1 LID (A) ASSY, CASSETTE (EXCEPT AEP)
17
X-3379-234-1 LID (B) ASSY, CASSETTE (AEP)
*
19
3-924-757-01 BRACKET (SPEAKER)
20
3-328-319-01 STRAP, HAND
21
3-924-749-21 LID, BATTERY CASE
22
3-924-747-21 KNOB (PAUSE)
23
3-019-597-21 CABINET (REAR)
24
3-334-565-11 SCREW (B1.7X10), TAPPING
25
3-366-890-51 SCREW (M1.4X6.0)
26
3-831-441-99 CUSHION
28
3-831-441-11 CUSHION, CABINET UPPER 10X7X0.5
*
29
1-675-340-11 SWITCH BOARD
30
3-927-521-01 CUSHION (BATTERY CASE LID)
31
3-042-506-01 KNOB (RECORD TIME)
32
4-017-441-01 CUSHION (B)
MIC901 1-542-136-11 MICROPHONE, ELECTRET CONDENSER
(MIC)
SP901
1-505-331-11 SPEAKER (3.6cm)
