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8 Pelco Manual C518M Rev B (4/91)
7.0 SCHEMATIC
Figure 5. MLZA6DT Schematic
BLK
BLU
BLU
BLK
VIDEO
LOOP-THRU
1
2
R2
C8
.05
1.5K
500V
R1
15M
C13
.01MF
CR7
CR8
R22
15M
R3
2.7M
R4
430
Q3
2N5457
R23
3.9K
VIDEO AMP
B- B+ B- B+
R25
1.2K
Q5
MPC
6527
R26
330K
Q6
2N2907
R28
4.7K
R29
47K
LEVEL ADJUST
R74
2.5K
17 18 19
R9
5.6K
B+
C11
.05MF
NOTES:
-ALL DIODES ARE IN914
-ALL RESISTORS 1/4W UNLESS SPECIFIED
-FOR LZA5 STRAP A AND C ONLY
-FOR CZA6 STRAP B ONLY
AMPLIFIER 1
FILTER
500V
R30
240K
2
3
Q2
TIP 29
R19
10
C7
.04MF
500V
TYP.
Q7
TIP 30
R20
3.3K
Q8
TIP 29
R41
10
C14
Q9
TIP 30
R42
3.3K
Q11
TIP 29
R57
10
C15
14
27
13
12
8
10
R58
3.3K
R69
2K 1/2W
CR28
Q12
TIP 30
CR27
R67
2.2 1/2W
Q13
TIP 30
CR30
CR29
R70
2.2 1/2WQ14
TIP 29
R15
10K
B+
B-
IRIS
(+20VDC)
LENS B+
(-20VDC)
LENS B-
B+
B-
9
11
4
3
BLK
FOCUS W/BRN
LENS COMMON
ZOOM
W/ORG
W/RED
GRY
123
4567
8 9 10 11
12 13 14
OUTPUT
AMP 206043-1
20
SPEED
ADJUST
Q3
TIP 29
2
3
11 12 10 6 5
7
14
Z2
UA723TC
4
C8
13
500Pf
R7
3K
R8
4.3K
R6
8.2K
4
3
22
500V
25
23
26
C1
.01MF
500V
B+ B- B+ B-B-
Q4
2N5457
C9
0.5MF
500V
R24
1K
CR1
CR2
CR3
R27
1.8K
B+
+
C2
6.8MF
35V
C3
.05MF
IC1
+
-
6
R8
7
4
B
B
12K
10 6 5
3
7
11
12
2 4 C5 13
R3
8.2
R4
4.3K
500Pf
R5
3K
C1
50
25V
+
+
C7
50
25V
C6
4700Pf
C4
4700Pf
Z1
UA723TC
Q2
TIP 29
R1
390
Q1
MPS6516
CR4CR2
IN4005
CR1 CR3
R2
390
C3
1000/25V
+
C2
1000/25V
+
10
7
PELCO PC ASSY. 1500246A
B+
B-
(+20VDC)
(-20VDC)
R73
2.5K
BLK
BLK
BRN
BRN
J1
J2
J3
GRN
YEL
GRN
T1
FOR 110 VAC INPUT: JUMPER J1 AND J2, REMOVE J3
FOR 220 VAC INPUT: JUMPER J3, REMOVE J1 AND J2
ZOOM NEAR
ZOOM FAR
FOCUS NEAR
FOCUS FAR
IRIS OPEN
IRIS CLOSED
S2
S4
S3
R58
3.3K
24
6
5
"OPEN"
COMPARATOR
R32
330K
3
2
6
R31
3.3K
IC2
-
+
4
7
C5
.01MF
500V
B+
B-
R50
680K
3
2
6
IC6
-
+
R49
11K
7
4
R51
82K
B-
B+
"CLOSE" COMPARATOR
PWR. ON
10
PWR. OFF
7
9
AUTO IRIS
MAN IRIS
S1-D
S1-C
11
8
S1-B
S1-A
3
MAN IRIS
2
PADDLE
CENTER
PADDLE
DOWN
PADDLE
UP
POWER ON
AUTO IRIS
POWER ON
MAN IRIS
POWER OFF
R44
5.6K
6
CR19
4
INVERTER
R46
5.6K
2
3
IC7
-
+
C17
.01MF
500V
B+ B-
7
C16
.01MF
500V
R52
8.2K
CR23
CR24
R53
150K
PELCO PC ASSY. 1500245A
B-
B+ B-
+
R65
22K
C19
47MF
35V
R45
7.5K
CR20
R59
150K
"CLOSE" TIMER
R60
2
3
IC8
-
+
22K
C18
47MF
35V
B+
B-
+
B+
7
4
6
R61
7.3K
2
3
"OPEN" TIMER
6
4
R54
B-
5.6K
CR25
CR31
R66
8.2K
CR21
R63
75K
R62
27K
B+
B-
7
IC9
-
+
R64
27K
R46
8.2K
B+
Q10
2N4392
PULSE
MODULATOR
C
CR22
CR26
R47
47K
R48
47K
CR32
R38
2.7M
VARIABLE
SPEED
VOLTAGE
SUPPLY
ADJUST
FOR
5V TO
IRIS
MOTOR
A
R71
10K
B+
B-
2
3
IC10
-
+
R56
3K
B
R55
3K
AUTO SPEED
OUTPUT DRIVER
7
4
6
R72
1K
OR STRAP
B+
B-
7
4
C6
0.1MF
500V
1
6
IC5
-
+
3
2
R15
10K
10K
R16
R18
1K
B+
15
R17
1K
16
Q1
MPS6512
F1
.2ASB
BLK
GRN
WHT
AC
INPUT
CR5
CR9
CR14
CR10
CR6
CR11
B-
R35
33K
CR15
B+
R36
33K
CR16
C10
CR4
R13
27K
CR12
.68M
50V
R33
1.5M
2.2M
R14
1.5M
R39
22K
C12
.68MF
50V
R10
27K
OSC.
2
3
IC4
-
+
IC3
-
+
7
4
CR17
B+
R40
120K
6
CR18
B+
B-
R21
22K
R34
2.7MF
B+
B-
7
4
3
2
6
R12
180
C4
2MF
50V
CR13
B-
R37
11K
RAPID CHANGE
DETECTOR/TIMER
129 6 3
11 5
107 4 1
12
12
PWR. IND.
R9
2K
5
8
9
2
3
4
R11
27K
82
1