AF008-02-1201
24
Number
Issue
Date
CN Number
1
2-
2
17-01-07
22933
Compiled
By:
S.Mynott
Date
Compiled:
08/08/06
MIT5XX/10XX
1
st
Used On:
SERVICE MANUAL
R130 100K
R115 100K
R107 100K
5V
N/FN/FN/F
LcdData2
C14
100nF
Engineering use only
C30
100nF
+
C13
10uF
16
+
C29
1uF
PL4 PL2PL3
Engineering Use Only
PL5
MainsLedC tl
LcdData3
C19
470nF
/Eng_mode
R51
100K
D14
LL4148
ComIDbit0
LcdData4
BatteryVolts
LcdBP2
LcdData5
5V
Debug0
R184
680R
ComIDbit1
R183 100K
LcdBP3
RES
SwitchedOnSink-
LcdData[0..8]
LcdData6
R155
100K
5V
0V
SK31
5V
C54
100nF
D31
LL4148
0V
C55
100nF
LcdData7
C49
100nF
(TxD1)
(RxD1)
5V
5V
(RxD0)
(TxD0)
5V
0V
Battery ChargeDisable
C53
100nF
ComIDbit[0..2]
C48
100nF
0V
D30
LL4148
C52
100nF
LcdData8
R49
10K
R146
47K
5V
R169 1K
EnableBattery Volts
CpuVcc
R162 1K
0V
0V
R151
1M
SW2
D39
P01102BL
SW1
IsoSupply En
5V
0V
LcdBP1
0V
R39
10K
R145
1M
A-Vcc
R34
10K
0V
PowerOff
C67
470nF
PL7 PL6
RC
2
C
1
B
5
A
4
Q
6
Q
7
RES
3
+
IC19-1
4538
MeterCoarse
R140
1M
Met erFine
RC
14
C
15
B
11
A
12
Q
10
Q
9
RES
13
+
IC19-2
4538
1 2
3
>=1
IC20-1
74HC32
D40
LL4148
4
5
6
>=1
IC20-2
74HC32
LcdBP[1..4]
10
9
8
>=1
IC20-3
74HC32
13
12
11
>=1
IC20-4
74HC32
ProgLedCtl
LcdData1
MHz
XL 1
6
RC
2
C
1
B
5
A
4
Q
6
Q
7
RES
3
+
IC21-1
4538
LcdBP4
D29
LL4148
D28
LL4148
0V
D33
LL4148
D34
LL4148
CNVss
R150
1M
0V
Comms[1..4]
IRDALink[1..2]
LcdData2
issue bit 3 (MSB)
TP68
LcdData3
Debug1
Debug3
Debug2
NF
Debug5
TP67
TP71
R104
10K
FnKey-
MainsDet ect
Debug[0..5]
COL[0..3]
PA[0..3]
LcdData4
OnOffKey-
StartStopKey-
FnKey-
Battery Volts
P64(f lash)
A2dRef
TP23
TP25
TP19
TP27
TP29
WDTKicking
LcdData5
(RxD2)
(TxD2)
LcdData6
OnOffKey-
StartStopKey -
R80
10K
TP20
5V
0V
LcdData7
TP69
P64(flash)
R129 10K
TP48
TP41
TP22
TP24
TP26
TP28
WDTKicking
TP53
TP51
Fitted in model 10A only
/Eng_mode
R106 10K
R105 10K
Debug5
R52 10K
R53 10K
R54 10K
TP55
R55 10K
MonoReset
/Backlight
TP54
0V
CNVss
R81
0R
TP60
Comms3
TP62
Comms4
R114
10R
R126
10K
issue bit 3 (MSB)
StartStopKey-
FnKey-
C31
100n
PA0
TP63
PA1
TP64
PA2
TP47
C35
1n
PA3
IRDALink2
IRDALink1
TP13
LcdBiasDisable
AVss
96
Vss
64
P20/A0(/D0/-)
72
P21/A1(/D1/D0)
71
P22/A2(/D2/D1)
70
P23/A3(/D3/D2)
69
P24/A4(/D4/D3)
68
P25/A5(/D5/D4)
67
P26/A6(/D6/D5)
66
P27/A7(/D7/D6)
65
P30/A8(/-/D7)
63
P31/A9
61
P32/A10
60
P33/A11
59
P34/A12
58
P35/A13
57
P36/A14
56
P37/A15
55
P40/A16
54
P41/A17
53
P42/A18
52
P43/A19
51
P00/D0
88
P01/D1
87
P02/D2
86
P03/D3
85
P04/D4
84
P05/D5
83
P06/D6
82
P07/D7
81
P10/D8
80
P11/D9
79
P12/D10
78
P13/D11
77
P14/D12
76
P15/D13/INT3
75
P16/D14/INT4
74
P17/D15/INT5
73
P60/CTS0/RTS0
38
P61/CLK0
37
P62/RxD0
36
P63/TxD0
35
P64/CTS1/RTS1/CTS0/CLKS1
34
P65/CLK1
33
P66/RxD1
32
P67/TxD1
31
P70/TxD2/SDA/TA0out
30
P71/RxD2/SCL/TA0in/TB5in
29
P72/CLK2/TA1out/V
28
P73/CTS2/RTS2/TA1in/V
27
P74/TA2out/W
26
P75/TA2in/W
25
P76/TA3out
24
P77/TA3in
23
P80/TA4out/U
22
P81/TA4in/U
21
P82/INT0
20
P83/INT1
19
P84/INT2
18
P85/NMI
17
P86/Xcout
11
P87/Xcin
10
P90/TB0in/CLK3
7
P91/TB1in/Sin3
6
P92/TB2in/Sout3
5
P93/DA0/TB3in
4
P94/DA1/TB4in
3
P95/ANEX0/CLK4
2
P96/ANEX1/Sout4
1
P97/ADtrg/Sin4
100
P100/AN0
97
BYTE
8
P101/AN1
95
CNVss
9
P102/AN2
94
P103/AN3
93
P104/AN4/KI0
92
P105/AN5/KI1
91
P106/AN6/KI2
90
P107/AN7/KI3
89
P44/CS0
50
P45/CS1
49
Vss
14
P46/CS2
48
Vref
98
AVcc
99
Vcc
16
P57/RDY /CLKout
39
Vcc
62
P47/CS3
47
P50/WRL/WR
46
P51/WRH/BHE
45
P52/RD
44
Xi n
15
Xo ut
13
RESET
12
P53/BCLK
43
P54/HLDA
42
P55/HOLD
41
P56/ALE
40
IC7
6139-200
A-Vcc
MainsDetect
TP65
TP11 TP12
0V
LcdData0
TP61
TP66
CpuVcc
Debug[0..5]
TP52
TP56 TP57
C23
33p
TP59TP58
C22
33p
R45
10K
COL0
5V
Range1000V
R306
10K
Range500V
TP39
Range250V
TP32
Range5000V
Range2500V
Range250V
COL1
/Eng_mode
Range500V
Debug3
TP33 TP36TP35TP34
COL2
Range1000V
Debug0
SwitchedOnSink-
COL3
Range2500V
Tit le
Size
Document Number
Date:
Sheet
of
ME G G E R L IMI T E D
Archcliffe Road, Dover,
Kent, CT17 9EN, Eng land
Issue Date CN No.Instrument:
Drawn By:
© MEGGER LIMITED
6270-299
Display PCB - Controller
A3 2 8
Wednesday , March 17, 2004
MEG05/10, models -10, -20
James Patten 10 14-10-2005 22482
11 02-11-2005 22500
<Variant Name>
LcdData8
R41
10R
Range5000V
PA0
TP49
Debug1
5V
C15
100nF
TP40
PA1
A2dRef
BuzzerCtl
UP_OK
TP334
issue bit 0 (LSB)
PA2
EXTRST
Debug2
PA3
ComIDbit2
Debug4
TP50
0V
0V
5V
5V
5V
0V
5V
0V
0V
0V
5V
5V
0V
COL0
LcdBP[1..4]
TP70
0V
BuzzerC tl
1
2
3
PL12
R61
10K
1
2
3
PL8
R64
10K
R186 0R
R62
10K
R46
0R
R63
10K
R65
10K
0V
R82
10K
SCL
COL1
variant bit 3 (MSB)
R66
10K
R83
10K
issue bit 1
5V
P85(f lash)
0V
COL2
PowerOff
issue bit 2
variant bit 2
Hv LedCtl
PCB ISSUE "0"
VARIANT "0"
N/FN/FN/F
SDA
N/F
ProgLedCtl
variant bit 0 (LSB)
COL3
P25
variant bit 1
Hv LedCtl
Debug4
Battery ChargeDisable
IsoSupply En
FLASH - CLK1
CNVss
EnableBattery Volts
TP30
A0
1
A1
2
A2
3
WP
7
Vss
4
SCL
6
SDA
5
Vcc
8
IC10
24C256
Not fitted
TP31
TP37
TP38
/model_10A
LcdLatchEnable
UP_OK
R128 10K
LcdLatchReset
LcdAddr0
P50(f lash)
LcdAddr[0..2]
TP42
TP43
LcdAddr1
TP45
R103
1R
TP46
TP44
MeterCoarse
LcdAddr2
CPU power decoupling
NoiseLed
NoiseLed
MeterFine
/Backlight
SK22
R79 100K
P25
R118 100K
ComIDbit0
D2
LST670-JL
R117 100K
ComIDbit1
Comms2
R116 100K
ComIDbit2
D3
LST670-JL
TP8
D11
LST670-JL
MainsLedCtl
Comms1
R3 1K
R132 10K
R10 1K
R18 1K
C85
10nF
R25 1K
LcdBiasDisable
(model ID)
TP9 TP10TP14TP15TP16TP17TP18TP21
LcdData[0..8]
LcdLatchEnable
LcdLatchReset
LcdAddr[0..2]
R133 10K
LcdData0
D1
LST670-JL
R40
10R
P50(flash)
LcdData1
R131 10K
C86
10nF
R127 100K
RESET
Not fitted
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