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COMPONENT DESCRIPTIONS
10-25
Edition One
XC1000 Service
L9
L8
L7
L6
L5
L4
L3
L2
PWR
PTIC ALARM
DIAGNOSTIC
TEST JACKS
NORMAL
OPERATION
LEDS
LEDS
PTIC
ALIGN
ALARMS
Y
R
A
B
Figure 10-14. LEDs and Diagnostic Jacks on a PTIC.
One 49,000-microfarad capacitor is wired in parallel with the –48 Vdc
power-supply lines on the power-distribution shelf. If the dc input voltage
drops to less than –42.5 Vdc, the capacitor discharges to maintain the
input voltage to the +5-Vdc power supplies for approximately 5 ms. This
input voltage permits the CPU to complete all tasks in progress and
prepare to reboot when power is restored.
The three components of the XC1000 power system are as follows:
The –48 Vdc power-distribution assembly is located on the power-
distribution shelf. The –48 Vdc power-control assembly is located
below the +5-Vdc power supplies and above the +12-Vdc power
supplies. The power-control assembly routes –48 Vdc power from the
power-distribution shelf to the main backplane.
SECTION 10.4
Содержание XC1000
Страница 1: ...EDITION ONE XC1000 P N 101 1345 000 SERVICE MANUAL ...
Страница 8: ...CONTENTS ...
Страница 19: ...1 INTRODUCTION ...
Страница 30: ...2 SITE PREPARATION ...
Страница 60: ...3 PLATFORM INSTALLATION ...
Страница 112: ...4 STARTUP AND INITIALIZATION ...
Страница 177: ...5 ROUTINE MAINTENANCE ...
Страница 195: ...6 TROUBLESHOOTING ...
Страница 237: ...7 STATUS LOG ...
Страница 297: ...STATUS LOG 7 54 Edition One XC1000 Service ...
Страница 302: ...8 REPAIR AND REPLACEMENT ...
Страница 380: ...9 SYSTEM UTILITIES ...
Страница 424: ...10 COMPONENT DESCRIPTIONS ...
Страница 465: ...11 OPTIONAL FEATURES ...
Страница 485: ...12 RELEASE 1 55 UPGRADE INSTRUCTIONS ...
Страница 516: ...13 RELEASE 2 X UPGRADE INSTRUCTIONS ...
Страница 559: ...14 RELEASE 3 02 FCP CONVERSION INSTRUCTIONS ...
Страница 603: ...15 RELEASE 3 02 ONLINE UPGRADE INSTRUCTIONS ...
Страница 631: ...16 RELEASE 3 0 SYSTEM UTILITIES ...
Страница 683: ...17 RELEASE 4 X FCP CONVERSION INSTRUCTIONS r P N 281 0023 002 1 of 3 ...
Страница 725: ...18 RELEASE 4 X ONLINE UPGRADE INSTRUCTIONS r P N 281 0023 002 2 of 3 ...
Страница 760: ...19 RELEASE 4 0 SYSTEM UTILITIES P N 281 0023 002 Part 3 of 3 r ...
Страница 776: ...20 RELEASE 4 1 SYSTEM UTILITIES P N 281 0033 000 ...
Страница 787: ...APPENDIXES ...