Fluke ScopeMeter 123 - Page 159

123
Service Manual
9-10
1
A
B
ADC_A
[1,D10]
[3,H8]
C
MIDADC_A
[1,E10]
D APWM_BUS
POS_B
OFFS ET_B
TRIGLEV1
TRIGLEV2
OFFS ET_A
POS_A
E
SADCLEV
CHARCUR
F
[C7]
G
[C7]
H
I
J
C434C432
22n100n
C433C431
REF_BUS
REFADCB
100n
C4024p7
C401
REFADCT
2 3
ADC-CHANNEL-A
R403
21K5
5
VIN
8
VRT
9
VRM
10
VRB
C403 7
IREF
100n
VSSA2
PWM FILTERS
R431
21K5
R432
147K
R433
147K
R434
147K
R438
147K
R439
21K5
R441
3K16
R442
1K47
C439 C442
4n7 22n
C438 C441
22n
R409 R436
26K1 26K1
C436
1u
CONTRAST
CONTR_D
22p
C479
CHARCURD
TP482
SADCLEVD
POS_A_D
OFFSETAD
TRGLEV2D
TRGLEV1D
OFFSETBD
POS_B_D
NC
1412
STBYVSSA1
8792TDA
D401
VDDA
6
100n100n
C407
C416
[B11]
VDDAA
4
5
VDDDA
VDDO
C408
100n
222
VDDD VDDO 14
D0
15
D1
16
D2
17
D3
18
D4
19
D5
20
D6
21
D7
24
CLK
13
OEN
NC VSSD VSSO
11 3 23
[3,H13]
RANDOMIZE
V461
R480
BAS16
10K
OPTION
R479
TP483
51K1
R478
10K
C480
100n
REF_BUS
[3,H8]
SCLK, SDAT
PROBE
100n
C464
REFPWM2
100n
C463
REFPW M1
HO_RNDM
HO_IN
HO_OUT
TP436
TP431
TP438
TP433
TP432
TP437
DTRG_BUS
ADCA_BUS
SMPCLK
ADC_A_D7
ADC_A_D6
ADC_A_D5
ADC_A_D4
ADC_A_D3
ADC_A_D2
ADC_A_D1
ADC_A_D0
[A10]
[A10]
6
7
X453
21 LCDONOFF
20
19 DATACLK0
18
17 LCDAT3
16 LCDAT2
15
14 LCDAT1
13 LCDAT0
12
11 LINECLK
10 FRAME
9
8 M
7 LCDTEMP1
6 +5VA
5 +3V3D
4 REFPW M1
3CONTRAST
2
1 -30VD
[5,K2]
[3,H8]
[F1]
[G1]
SMPCLK
RAMPCLK
TRIGDT
TRIGQUAL
ADC_A_D7
ADC_A_D6
RSTRAMP ADC_A_D5
ADC_A_D4
HOLDOFF
ADC_A_D3
ADC_A_D2
ADC_A_D1
ADC_A_D0
HOLDOFF
RAMPCLK
SMPCLK
SMPCLK
[I8] ALLTRIG
TRIGDT
TRIGQU AL
RSTRAMP
TRGLEV1D
TRGLEV2D
POS_B_D
DPWM_BUS
OFFSETBD
OFFSETAD
POS_A_D
CONTR_D
SADCLEVD
CHARCURD
ADC_B_D7
ADC_B_D6
ADC_B_D5
ADC_B_D4
ADCB_BUS
ADC_B_D3
ADC_B_D2
ADC_B_D1
ADC_B_D0
R471
1M
PROBE_A
[1,E3]
PROBE_B
[2,D3]
SCLK
SDAT
C488
100p
SEE CIRCUIT DIAGRAM 4
DIGITAL CIRCUIT KEYBOARD
100p
C487
R474
100E
TP472
100E
R473
TP471
1M
R472
[I12]
SUPPRDET
52NC
51
50
49
48
47
[B11]
46+VD
45
44
43
42
[B11]
41+VD
40
39
38
37
36
[5,K 16]
35BACKBRIG
34
33
32
31
30NC
29
28
27
26HO_RNDM
25
24
23
22
21
20
19
18
[B11]
17+VD
16
15HO_IN
14HO_OUT
13
[B11]
12+VD
11
10
9
8
7
[B11]
6+VD
5
4
3
2
1NC
FRAME
CONTRAST
REF_BUS
LCDTEMP1
[5,C16]
[5,B16]
[5,B16]
[5,B16]
[5,B16]
[5,B10]
8 9
LCDONOFF
MS422
MS421
DATACLK0
MS420
+12VPROG
MS419
LCDAT3
MS418
LCDAT2
MS417
NC
MS416
LCDAT1
MS415
LCDAT0
MS414
NC
MS413
LINECLK
MS412
FRAME
MS411
+VD
[B1 1]
MS410
M
MS409
LCDTEMP1
MS408
+5VA
MS406
+3V3D
MS405
REFPW M1
MS404
CONTRAST
MS403
MS402
-30VD
[5,C16] MS401
LCD_BUS
M FRAME LINECLK LCDAT0 LCDAT1 LCDAT2 LCDAT3
NC
208 207 206 205 204 203 202 201
NC
M
FRAME
LINECLK
LCDAT0
LCDAT1
LCDAT2 LCDAT3
NC
ADCA7
ADCA6
ADCA5
ADCA4
VDD
VSS
ADCA3
ADCA2
ADCA1
ADCA0
VCLAMPA
HOLDOFF
DIGHO
HOSCHMIN
TROTCLK
VDD
VSS
SMPCLK
EXTTRIG
ALLTRIG
TRIGDT
TRIGQUAL
TROTRST
SHLDPWM
PWMA10N6
PWMA10N5
PWMA10N4
PWMA10N3
PWMA10N2
PWMA12N1
VDDREFA
VSSREF
PWMA12N0
PWMA10N1
PWMA10N0
PWMA8N0
VDDREFB
PWMB10N0
PWMB8N0
VCLAMPB
ADCB7
ADCB6
ADCB5
ADCB4
VDD
VSS
ADCB3
ADCB2
ADCB1
ADCB0
NC
PROBEA PROBEB ROW 0 ROW 1 ROW 2 SCL SDA NC
53 54 55
56 57 58 59 60
NC
TP473
TP474
B401
43
32KHz
21
C486 C485
27p 27p 22p22p
C483
C484
12
16MH z
34
B402
TP476
[B11]
+VD
74 73 72 71 70 69 68 67 66 65 64 63 62 61
VSS VDD COL5 COL4 COL3
COL2 COL1 COL0 ROW 5 ROW4 ROW 3 ONKEY RTCXTALO ROMA7
ROMA6
ROMA5
ROMA4
ROMA3
ROMA2
ROMA1
ROMA0
VDD
VSS
187 188 189 190 191 192 193 194 195 196 197 198 199 200
NC
+VD [B11]
ROM_A08 ROM_A07 ROM_A06 ROM_A05 ROM_A04 ROM_A03 ROM_A02 ROM_A01 ROM_A00 LCDONO FF DATACLK0
ROM_ADDR
ROM_ADDR
[I4]
[A4]
[I5]
[A5]
[I5]
[A5]
10 11
VDDO
R404
VDDDA
1E
R454
VDDDB
1E
R417
VDDAA
1E
R467
VDDAB
1E
+VD
C471 C472
100n 100n
ROM_A09 ROM_A10 ROM_A11 ROM_A12 ROM_A13 ROM_A14 ROM_A15 ROM_A16 ROM_A17 ROM_D15 ROM_D07 [B11]+VD
186 185 184 183 182 181 180 179 178 177 176 175 174
ROMA8
ROMA9
ROMA10
ROMA11
VSS
VDD
ROMA12 ROMA13
ROMA14
ROMA15
ROMA16
ROMA17
ROMD15
ROMD7
D471
D-ASIC
MOT0002N1
RTCXTALI UPXTALO UPXTALI CPXTALO CPXTALI EXTINT TEST TXD1 RXD1 VDD VSS VSS VDD VSS
75 76 77
78 79 80 81 82 83 84 85
86 87
+VD +VD +VD TXD RXD
[B11] [B11] [B11]
B403
3
25MHz
1
C482 C481
22p 22p
MAINVAL
FREQPS
[H8]
[B11]
NC +VD FREQPS SLOWADC SELMUX2 SELMUX1 SELMUX0 MAINVAL VGARVAL SUPPRDET BATIDENT PWRO NOFF
99
98
97
96 95
94
93 92
91
90 89 88
100
IO4
IO3 IO2 IO1 IO0 VSS VDD PW RON FREQPS PROBEC NETVALID BACKLIGHT VGARVALID
ROMD9
ROMD2
ROMD10
ROMD3
VDD
VSS
ROMD11
ROMD4
ROMD12
ROMD5
ROMD13
ROMD6
ROMD14
161 162 163 164 165 166 167 168 169 170 171 172 173
+VD [B11]
ROM_D09
ROM_D02 ROM_D10 ROM_D03 ROM_D11 ROM_D04 ROM_D12 ROM_D05 ROM_D13 ROM_D06 ROM_D14
ROM_DAT A
100n100n
C474
C473
0E
+3V3GAR
R470
10u
C465
1E
+3V3A
R466
1E
+3V3D
R416
12 13
[5,B16]
[5,C16]
[B11]
[5,B16]
ROM_D01 ROM_D08 ROM_D00
NC
160 159 158 157
ROMD1
ROMD8 ROMD0
NC
156 NC
NC
155
IO9EXDTA
154
EXTMA0
153
D16CS0
152
D16CS1A18
151
D16CS2A19
150
ROMRD
149
ROMWR
148
VSS
147 +VD
VDD
146
ROMRST
ROMRST
145
IO8
144
RAMD7
143
RAMD6
142
RAMD5
141
RAMD4
140
RAMD3
139
RAMD2
138
RAMD1
137
RAMD0
136
D08CS0
135
DEBUG1
D08CS1
134
NC
D08CS2
133
RAMRD
132
RAMWR
131
VSS
130
+VD
VDD
129
RAMA0
128
RAMA1
127
RAMA2
126
RAMA3
125
RAMA4
124
RAMA5
123
RAMA6
122
RAMA7
121
RAMA8
120
RAMA9
119
RAMA10
118
RAMA11
117
RAMA12
116
RAMA13
115
RAMA14
114
VSS
113
+VD
VDD
112
RAMA15
111
RAMA16
110
RAMA17
109
RAMA18
108 RXD2
RXD2
107
TXD2
TXD2
106
EMUL
105
NC
IO5 IO6 IO7 NC
101
102
103 104
NC
BUZZER
SADC_BUS
[5,G15]
[5,F15]
[5,H7]
51K1
R491
MS447
RAM_A18
RAM_A17
RAM_A16
RAM_A15
[B11]
RAM_A14
RAM_A13
RAM_A12
RAM_A11
RAM_A10
RAM_A09
RAM_A04
RAM_A08
RAM_A05
RAM_A07
RAM_A06
RAM_A06
RAM_A07
RAM_A05
RAM_A12
RAM_A04
RAM_A14
RAM_A03
RAM_A16
RAM_A02
RAM_A18
RAM_A01
RAM_A00
RAM_A15[B11]
WR ITERAM
W RITERAM
RAM_A13
READRAM
RAM_A08
RAM_A09
RAM_A11
RAM_CS0
RAM_D0
RAM_D1
RAM_D2
RAM_D3
RAM_D4
RAM_D5
RAM_D6
RAM_DATA
RAM_D7
[3,E8]
DACTESTT
[B11]
ROMREAD
ROM_A19
ROM_A18
ROM_CS0
DEBUG2
[5,J11]
TLON
14 15
TP487
D475
M5M51008 TP
1
A11
2
A9
3
A8
4
A13
5
W
6
S2/A17
7
A15
8
VCC
9
NC/A18
10
A16
11
A14
12
A12
13
A7
14
A6
15
A5
16
A4
128X8 SRAM
512X8 SRAM
[B11]
R497
+VD
0E
C478
100n
RAM_ADDR
TP496
BSS84
V495
TP495
R495
3K16
R496
3K16
-30VD
[5,C16]
ST8089-2
00-01-12
4
BUZ
BUZZER
H495
BUZZER
[B11]
+VD
A3
RAM_A03
17
A2
RAM_A02
18
A1
RAM_A01
19
A0
RAM_A00
20
DQ1
RAM_D0
21
DQ2
RAM_D122
DQ3
RAM_D2
23
GND
24
DQ4
RAM_D3
25
DQ5
RAM_D4
26
DQ6
RAM_D5
27
DQ7
RAM_D6
28
DQ8
RAM_D7
29
S1
RAM_CS0
30
A10
RAM_A10
31
OE
READRAM
32
16 17
47u
L481
TP488
CONTRAST
[5,C16]
V401
BSN20
FRAME
[5,C16]
22n
C409
-30VD
3K16
R407
V402
BSN20BSS84
V403
511E1K
R406R405
+3V3D
22n100n 4n7
R408
10M
C404
470p
R410
68E1
VGARVAL
[5,B10]
TXD
RXD
PW RONOFF
[5,G16]
[5,H15]
[5,H15]
TO
LCD
MODULE
X452
KEYPAD FOIL
BATIDENT
[5,B5]
100K
R469
+VD
56K2
R499
VGARVALF
C489
22n
ROMWR
100n
C476
[F8]
R498
OPTION
RAM_A18
R498 R497
128x8 open 0E
256x8 open 0E
512x8 0E open
RAM
ROMW RITE
ROM_ADDR
25ROM_A00
26ROM_CS0
27
28
ROMREAD
29ROM_D00
30ROM_D08
31ROM_D01100n
32ROM_D09
C475
33ROM_D02
34ROM_D10
35ROM_D03
36ROM_D11
37
38ROM_D04
39ROM_D12
40ROM_D05
41ROM_D13
42ROM_D06
43ROM_D14
44ROM_D07
45ROM_D15
46
47+VD
48ROM_A16
D474
28F400
AM29LV800B
A16
1
BYTE# A15
2
GND A14
3
DQ15/A_1 A13
4
DQ7 A12
5
DQ14 A11
6
DQ6 A10
7
DQ13 A9
8
DQ5 A8
9
DQ12 NC
10
DQ4 NC
11
VCC WE#
12
ROMRST
RP#
DQ11
13
DQ3 VPP
14 +VD
DQ10 W P#
15
DQ2 RY
16
DQ9 A18
17
DQ1 A17
18
DQ8 A7
19
DQ0 A6
20
OE# A5
21
GND A4
22
CE# A3
23
A0 A2
24
A1
ROM_A01
ROM_A02
ROM_A03
ROM_A04
ROM_A05
ROM_A06
ROM_A07
ROM_A17
ROM_A18
[B11]
ROMW RITE
ROM_A08
ROM_A09
ROM_A10
ROM_A11
ROM_A12
ROM_A13
ROM_A14
ROM_A15
ROM_A19
R488
0E
R488 FOR INTEL
16M ROM ONLY
ROM
C476
100n
R481
10K
R483
100K
V482
BAT54S
R482
10K
+VD
+12VPROG
Dotted connections and parts for PCB version < 8
10K
10K
+VD
R486 R487
R484 R485
OPTION
PCA Version Detect
(not for PCB <8)
STBY_B
STBY_A
To ADC's for
PCB version <8
(not for PCB <8)
Dotted line for PCB <8
STBY_A
[J,14]
PCB version < 8
PCB version 8
PCB version < 8
ADC_B
[2,D10]
[3,H8]
MIDADC_B
[2,E10]
REF_BUS
100n
C453
REFADCB
100n
C4524p7
C451
REFADCT
R453
21K5
5
VIN
8
VRT
9
VRM
10
VRB
7
IREF
VSSA2
NC
1412
STBYVSSA1
8792TDA
D451
VDDA
6
100n
100nC466
C457
[B11]
VDDAB
ADC-CHANNEL-B
VDDDB
VDDO
C458
100n
222
VDDD VDDO 14
D0
15
D1
16
D2
17
D3
18
D4
19
D5
20
D6
21
D7
24
CLK
13
OEN
NC VSSD VSSO
11 3 23
SMPCLK
ADC_B_D7
ADC_B_D6
ADC_B_D5
ADC_B_D4
ADC_B_D3
ADC_B_D2
ADC_B_D1
ADC_B_D0
[A10]
[A10]
STBY_B
[I,14]
PCB version < 8
PCB version 8
1
2
1
3
R481
R482
+VD
5
4
1
R483
0E
OPTION
511E
V471
BAS85
51K1
C470
470P
D480
74LVC32
D480
74LVC32
6
Delay circuit for PCB version 8
Dotted connection for PCB version < 8
Direct connections for PCB version 8
[5,B10]
[J3]
[C3]
ST8089.WMF
Figure 9-4. Circuit Diagram 4, Digital Circuit