Service manual

Index-4
MCHK 620 correctable error, 5-44
MCHK 630 correctable CPU error, 5-
41
MCHK 660 IOD detected failure, 5-
27, 5-32
MCHK 670 CPU and IOD detected
failure, 5-16
MCHK 670 CPU-detected failure, 5-
11
MCHK 670 read dirty failure, 5-21
Memory addressing, 1-24
rules, 1-25
Memory errors
corrected read data error, 5-52
read data substitute error, 5-52
Memory modules, 1-17, 1-22, 7-3
removal and replacement, 7-22
variants, 1-23
Memory operation, 1-23
Memory option
configuration rules, 1-23
Memory pairs, 1-23
Memory tests, 2-14, 2-21
Memory, broken, 5-52
Modem, C-2
answer, C-23
dial-in procedure, C-4
hangup, C-23
phases of operation, C-22
ring detection, C-23
N
Node IDs, 5-55
NVRAM, 2-3, 2-8, 7-34
O
Operator control panel removal and
replacement
cabinet system, 7-54
pedestal system, 7-56
os_type environment variable, SRM,
2-7, 2-23
P
Page table entry invalid error, 5-51
PALcode, 2-23
PALcode, described, 5-56
PCI Error Status Register 1, 6-14
PCI I/O subsystem, 1-30
PCI master abort, 5-51
PCI motherboard, 1-31
PCI motherboard (B3050)
removal and replacment, 7-34
PCI motherboard (B3051)
removal and replacment, 7-36
PCI parity error, 5-51
PCI system error, 5-51
PCI/EISA option
removal and replacement, 7-40
PCI_ERR Register, 6-14
Pedestal system, 1-10
PIO buffer overflow error
(PIO_OVFL), 5-50
Potentiometer, 2-2
Power circuit
and cover interlocks, 4-6
diagram, 4-6
failures, 4-7
Power configuration rules
cabinet system, 4-10
pedestal system, 4-14, 4-15
redundancy, 1-37
Power control module, 1-17, 1-34
LED states, 3-9
removal and replacement, 7-24
Power control module features, 4-4
Power control module LEDs, 3-8
Power cords, internal, 7-4
Power faults, 4-9
Power harness
removal and replacement, 7-44,
7-46
Power problems
at power-up, 3-7
Power supply, 1-36
fault protection, 4-3
outputs, 4-2
removal and replacement, 7-42