IFR COM-120B Service Manual

1.8
CALIBRATION
PROCEDU
RES
1-8-1
POWER
SUPPLY
CALIBRATION
PREREQUISITES:
NONE
EQUIPMENT
REOUIRED:
1
Dlc|TAL
MULTTMETER (DMM)
FIG
URES:
1-2
STEP
PROCEDURE
1. Apply
Power
to COM-12O8.
Ailow
30 minute warm-up
period.
2. Verify
Voltages
at Motherboard
Connector
87A6J10
per
Table 1-2
using DMM.
Refer
to
Figure
1-2 tor pin
locations.
Use
Chassis
f
or
ground.
Supply
Voltage
Locatlon
+13
V
+13 Vdc
(10.25
V)
8746J10 PtN 1.13
+35
V
+35
Vdc
(t1
V)
87A6J10 PtN
2.14
10.5 V
-10.5
Vdc
(t0.5
V) 8746J10 PtN
3.15
+10.5 V
+10.5
Vdc
(10.25
V) 87A6J10
PIN
4.16
+5
V
Analog
+5
Vdc
(+0.2
V/-0.0
V)
87A6J10 PIN
5.17
+5
V
Digital
+5
Vdc
(+0.2
V/-0.0
V)
8746J10 PrN 7,19
+12 V
EL
+12 Vdc
(10.25
V) 87A6J10
PrN
9.21
Table 1-2
Power
Supply Voltages
and Locations
3.
Set COM-1208
to OFF
and disconnect
test equipment.
1-5
1-8 CALIBRATION PROCEDURES
1-8-1 POWER SUPPLY CALIBRATION
PREREQUISITES:
NONE
EQUIPMENT REQUIRED:
DIGITAL MULTIMETER (DMM)
FIGURES:
1-2
STEP
PROCEDURE
1. Apply Power to COM-120B. Allow 30 minute warm-up period.
2. Verify Voltages at Motherboard Connector 87A6J10 per Table 1-2 using DMM. Refer to
Figure 1-2 for pin locations. Use Chassis for ground.
Supply
Voltage
Location
+13 V
+
13 Vdc (±0.25 V)
87A6J10 PIN 1,13
~~------
----,----,
f--~-~-~~--- ~~ - --- -~
-"-~-----
+35 V
+35 Vdc (±1 V)
87A6J10 PIN 2,14
-10.5 V
-10.5 Vdc (±0.5 V)
87A6J10 PIN 3,15
+ 10.5 V
+10.5 Vdc (±0.25 V)
87A6J10 PIN 4,16
+5 V Analog
+5 Vdc (+0.2 V/-O.O V)
87A6J10 PIN 5,17
+5 V Digital
+5 Vdc (+0.2 V/-O.O V)
87A6J10 PIN 7,19
+12VEL
+12 Vdc (±0.25 V)
87A6J10 PIN 9,21
Table 1-2 Power Supply Voltages and Locations
3. Set COM-120B to OFF and disconnect test equipment.
1-5
Scans by ArtekMedia © 2008

IFR COM-120B Specifications

General

Brand	IFR
Model	COM-120B
Category	Measuring Instruments
Language	English