JCM J3500E, Руководство по обслуживанию

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8
3.2.4. display circuit
Display signals are applied to display circuit board via CN3.
The display signals for digit indication are supplied from P120 to P127 and P145,P146 of CPU ports.
The digit indication signals are amplified at 9 FETs.(2SJ208) And they are supplied to LED common
terminal on FD and supplied to RI ones.
The segment data signals are amplified at U14’(M54583) and supplied to segment line of FD and RI
circuit board.
From CPU
board
segment
signal
for RI
digit signal
for RI
DET1
1
DSP A
2
DSP B
3
DSP C
4
DSP D
5
DSP E
6
DSP F
7
DSP G
8
DSP P
9
DSP G1
10
DSP G2
11
DSP G3
12
DSP G4
13
DSP G5
14
DSP G6
15
DSP G7
16
DSP G8
17
DSP G9
18
DSP G10
19
DET2
20
CN3
52045-2010
11
10
2
3
4
5
6
7
8
9 19
18
17
16
15
14
13
12
U14
M54583FP
VCC
VCC
VCC
2 3 4
5
7 8 9 1
10
6
RA1
RA103
R7
103 R6
103
VCC
R39
102
R38 102
R37
102
R36
102
R35 102
R34
102
R33 102
R32
102
R30
102
R29 102
DSPG1
DSPG2
DSPG3
DSPG4
DSPG5
DSPG6
DSPG7
DSPG8
DSPG9
DSPG10
DSPG[1..10]
DSPG[1..10]
FB62 BLM21AG121SN1
FB47 BLM21PG600SN1
FB46 BLM21PG600SN1
FB49 BLM21PG600SN1
FB48 BLM21PG600SN1
FB51 BLM21PG600SN1
FB50 BLM21PG600SN1
FB53 BLM21PG600SN1
FB52 BLM21PG600SN1
FB55 BLM21PG600SN1
FB54 BLM21PG600SN1
FB57 BLM21AG121SN1
FB56 BLM21AG121SN1
FB59 BLM21AG121SN1
FB58 BLM21AG121SN1
FB61 BLM21AG121SN1
FB60 BLM21AG121SN1
FB63 BLM21AG121SN1
DSPS[1..8]
DSPS[1..8]
DSPS1
DSPS2
DSPS3
DSPS4
DSPS5
DSPS6
DSPS7
DSPS8
FB45
BLM21PG600SN1
C54
103C C52
103C C48
103C C63
103C C26
103C C62
103C C73
103C C72
103C C70
103C
74LV00A 74LV14A 74LV14A 74LV32A 74LV32A 74LV123A 74LV138A 74LV138A LMV358
C66
103C
LM393
VBB VBB VCC VCC VCC VCC VCC VCC VCC VCC
8PIN
7PIN 7PIN 7PIN 7PIN 7PIN 8PIN 8PIN 8PIN 4PIN
8PIN
4PIN
16PIN 16PIN 16PIN 14PIN 14PIN 14PIN 14PIN 14PIN
2 1
3
Q14
2SJ208
2 1
3
Q6
2SJ208
2 1
3
Q13
2SJ208
2 1
3
Q5
2SJ208
2 1
3
Q12
2SJ208
2 1
3
Q4
2SJ208
2 1
3
Q11
2SJ208
2 1
3
Q3
2SJ208
2 1
3
Q10
2SJ208
2 1
3
Q2
2SJ208