3-2
NOTE: See Table 2-1 for information on closing channels.
Ordering information
To place an order or to obtain information concerning replacement parts, contact your Keithley representative or the factory.
When ordering parts, be sure to include the following information:
• Model numbers 7020-MWS, and 7001/2, System 40
• Serial number of the chassis, card, or mainframe, workorder number on System 40 chassis
• Part description
• Circuit designation (if applicable)
• Keithley part number
Factory service
If the System 40 system must be returned to Keithley for repair, perform the following:
1. Call the Repair department at 1-800-552-1115 for a Return Material Authorization (RMA) number.
2. Complete the service form at the back of this manual and include it with the card.
3. Carefully pack the card in the original packing carton.
4. Write ATTENTION REPAIR DEPT and the RMA number on the shipping label.
Table 3-1
Troubleshooting procedure
Step
Item/component
Required condition
Comment
1
Chassis
All voltages referenced to chassis
2
K1-K5, pin COM
< 29VDC
Relay coil voltage
3
K1 pin 1, K5 pin 1
< 1.5V
Close channel 1
4
K1 pin 2, K5 pin 1
< 1.5V
Close channel 2
5
K1 pin 3, K5 pin 1
< 1.5V
Close channel 3
6
K1 pin 4, K5 pin 1
< 1.5V
Close channel 4
7
K2 pin 1, K5 pin 2
< 1.5V
Close channel 5
8
K2 pin 2, K5 pin 2
< 1.5V
Close channel 6
9
K2 pin 3, K5 pin 2
< 1.5V
Close channel 7
10
K2 pin 4, K5 pin 2
< 1.5V
Close channel 8
11
K3 pin 1, K5 pin 3
< 1.5V
Close channel 9
12
K3 pin 2, K5 pin 3
< 1.5V
Close channel 10
13
K3 pin 3, K5 pin 3
< 1.5V
Close channel 11
14
K3 pin 4, K5 pin 3
< 1.5V
Close channel 12
15
K4 pin 1, K5 pin 4
< 1.5V
Close channel 13
16
K4 pin 2, K5 pin 4
< 1.5V
Close channel 14
17
K4 pin 3, K5 pin 4
< 1.5V
Close channel 15
18
K4 pin 4, K5 pin 4
< 1.5V
Close channel 16
