If it is necessary to have all the supplies come up simultaneously after a system shutdown, follow this procedure:
a.First bring the REMOTE INHIBIT line low.
b.Provide a
c.After at least one second, return REMOTE INHIBIT to a high level.
Figure A-10. System Shutdown Using Bias Supply Output
Figure A-10 shows a second method of system shutdown. This method is appropriate in systems which are not controller-operated and in which more than four supplies must be shutdown simultaneously. Because each supply derives its CONTROL ISOLATOR BIAS from the previous supply's + 5V REG, there is no limit to the number of supplies that can be shutdown. Each supply must be reset individually.
Using either method of system shutdown, PCLR inhibits the OVERVOLTAGE indicator from going low and shutting
down succeeding supplies upon initial sum-on. After the supplies have stabilized, PCLR returns to a high state.
Bias Supplies
The outputs of three
It may be desirable to install
Maintenance
The following paragraphs provide procedures and setups to aid in checking and troubleshooting the 002 Option Board. This information, used in conjunction with the schematic drawing and the Operation section of this Appendix, will help in the isolation and repair of faulty circuits.
When testing the option, use of the test connector on page 83 will allow easier access to the J3 contacts.
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