12.5 Rpsu280 Power Supply Test - Toshiba Strata DK 280 Installation Manual

CAUTION !
Do not:
n Drop a PCB.
n Stack one PC9 on top of another.
n Handle a PC9 without discharging any
static electricity from your person by
touching the grounded cabinet.
n Touch PC9 contacts with your fingers.
IMPORTANT !
,
If the fault is not cleared by substituting a
PCB, reinstall the original PC9 in the KSU
before trying another PCB.
12.3 Defective Parts Return
Follow these steps to ship a defective system part for
repair:
1. Pack the part in a suitable container (original box
is highly recommended). Use anti-static containers
for all PCBs and Feature cartridge. Use plastic
bags for digital or electronic telephones, KSU, etc.
CAUTION !
To avoid damage, never write on the part
itself!
2. Describe the nature of the defect on an
information tag. Attach the tag to the front of the
unit with string (not wire) so the tag can remain
attached during the testing and repair.
Return tags are available from Toshiba America
Information Systems, Inc., TSD Division.
12.4 Common Control Fault Isolation
The DK280 Common Control PCBs, RCTUA, RCTUB,
RCTUBA/BB, and RCTUC/D, may contain a "soft"
fault due to an extremely high level of static electricity
and/or improper or no System Initialization. If it is
found defective during the fault finding procedures,
attempt to clear a "soft" fault before returning the
'RCTU PCB for repair. The correct procedure for this
is:
1. Verify that the BATT jumper plug on the RCTUA,
RCTUB, RCTUBB, RCTUC or RCTUD3 PCB is in
the ON position.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
If the RRCS or RKYS options are installed on
the
RCTU, verify that they are installed correctly per
Chapter 4-Printed Circuit Boards.
-
With system power OFF, install either an RCTUA,
B, BB, or D in the "RCTU" slot of the base cabinet.
If RCTUD is installed, install RCTUC in the "Rll"
slot of base cabinet. If RCTUBB is installed in the
"RCTU" slot, install RCTUBA in the RI 1 slot of the
base cabinet.
If installing RCTUC and D or RCTUBA and BB,
connect them together with the two ribbon cables
supplied per Chapter 4-Printed Circuit Boards.
Verify all other circuit boards are installed in
proper slots per Chapter l-Configuration.
Turn system power ON; verify that the heartbeat
LED flashes on RCTUAS, RCTUBB, RCTUB,
RCTUD (RCTUAI, BA, and C do not have
heartbeat LEDs).
Run System Initialization Program 91-9 (two
times) per Record Sheet Program 91-9.
Run Program 03, for all option PCBs installed per
Record Sheet Program 03.
With DK280 Release 3, run the RCTU RAM tests
with Program 00.
Enter the customer database (manually or with
280Admin) and retest for fault.
If the fault remains, test power supplies per
Section 12.5. After doing these procedures and
power supplies are within specification, tag the
defective RCTU PCB(s) and return for repair.
12.5 RPSU280 Power Supply Test
This test applies to the base and expansion cabinet
RPSU280 power supplies. Cabinet Printed Circuit
Boards (PCBs) may or may not be installed when
beginning this test. Some steps,in the test require an
AC/DC voltmeter that can measure up to 50 VDC and
150 VAC.
1. Verify that the correct RPSU280 jumper plug is
installed in the jumper plug socket. The plug with
the wire must be installed on the base cabinet
RPSU280 and the plug without the wire must be
installed on all expansion, cabinet RPSU280s. One
of each plug is supplied in a plastic bag attached
to each RPSU280 power supply.
12-2
January
1996