HP 425s Specifications Page 89
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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4.
Make sure that the system power is off and that the power cord is
unplugged.
Remove the system cover.
If connected, disconnect the system from the network. If the system uses
a network eonneetor, unplug it from the network walloutlet. If the sys-
tem uses BNC
connectors to eonneet to the network. unDlue them from
the rear of thes tern unit. This opens the loop in the n~tw&k.To com-
plete the loop w ile ou are servicm the system,use a barrel type BNC
‘{ +
connector between t e IN and OU connectors.
Plug in the power cord and ~wer on the system.
Do not unplug the J(IO4
eonncctor from the CPU board. Measure the volts es through the top of
fthe connector. Use the voltmeter to test for the vo tages on the
J(K)4
eonneetor as listed in Table 4-1.
Voltage
(V dc)
+5
Ground
+12
-12
+12
+9
+5
+12
Ground
T&le 4-1. Power Supply Voltagesand Tolerances
(Model 400L 4251, and 400dl)
Tolerance at
JfJ04 Connector
4.85 to 5.25 V dc
—
11.4to 12.6V dc
-11.28 to -12.72 V dc
11.4 to 12.6 V dc
8.7 to 9.3
Toleranee at P2
and P3 Connector
4.85 to 5.25 V dc
11.4to 12.6V dc
—
J004p~nonnoector
.
1,3, and 9
14, 16, 18,and 20
7
6
4
differential betwee
Pins 17 and 19
P2 and P3
Connector Pin No,
4
1
2 and 3
Wme
Color
Red
Black
Violet
Green
Brown
Orangt
Yellow
Wire
Color
Red
Violet
Black
Troubleshooting
4-17
- Service Handbook 1
- ~ ktfOmSSHOfIcontelned 2
- ● Printing History 3
- Emissions Regulations 4
- VCCI Class 1 ITE Equipment 5
- Acoustics 6
- Chapter 2 8
- Chapter 4 9
- Chapter 5 10
- Diagnostics 10
- Chapter 9 11
- Reference 11
- Chapter 10 11
- Service Notes 11
- Contents 12
- HP A1448ACDROM Drive ,. . 13
- Product Information 17
- Model 400dl Overview 18
- Physical Configurations 19
- System Unit 20
- Monitors 20
- Keyboards 20
- Overview 22
- 42Ss,or 433s system 23
- 1-8 Product Information 24
- AccessoryCards/Boards 25
- Internal Mass Storage 28
- Environmental/ 29
- Installation/PM 2 29
- Installation 30
- Preventive Maintenance 30
- Environmental Specifications 31
- Regulatory Requirements 31
- ● Cotilguration 33
- ------A— ---- J .--— 34
- GraphicsSelectionJumper 35
- (ColorGraphics 35
- ~nfiguratio 37
- (‘ ‘~’“u’ 40
- Cnnfimardinn 3-9 41
- 1111111llullll lllllllllllr 43
- 1111111ulllllllllllllllr 43
- Rodime 200 MB Disk Drive 44
- Terminators 45
- ”””””””””””””Jl@q 48
- (Bottom View) 49
- Pack Terminator 49
- Configuration 49
- Hewlett-Packard 1.3-C3B Drive 51
- Single In-1ineTerminators 51
- Configuration 3-19 51
- HP A1449A 0.25-in. QIC 60-MB 52
- HP A1448A CD-ROM Drive 53
- HP A1447A DAT Tape Drive 54
- Series 400 Systems EEPROM 55
- CPU Board with 57
- Integrated GraphIce 57
- Replacing a Defective EEPROM 58
- Mode Systems 60
- Workstation Do 66
- Selecting the Primary Network 67
- EX CONFIG <Return> 68
- Quit <Return> 69
- ● Troubleshooting 73
- Figwe 4-1. Main Flowcharf 74
- (Continu@ 74
- Troubleshooting 4-3 75
- Troubleshooting 4-9 81
- Ttouble.shooting 82
- ‘Aesum‘hatyou‘Pror?vdd 87
- 400dl Systems 88
- (Model 400L 4251, and 400dl) 89
- CPU Board 91
- CircuitFRU Pin Numbets 92
- 425t System Units 93
- Checkout Procedures for 95
- ●12 ●11 ●10 ●9 98
- Trouhlc%hnotin@ 99
- (Model 400s, 425s, and 433s) 100
- Calendar Baltety Message 101
- Memory Module Failures 102
- Troubleshooting 103
- ‘UNEXPECTED” Error Messages 105
- 3 Hex LSDS 106
- LED Status and Error Messages 108
- IHHHIIHHHI 109
- DMHHHHHI 109
- Power LED O 110
- State and Failure Codes 112
- O~ratings tern 113
- Not enough mem 114
- Boot ROM Messages 115
- SYSTEU SEARCH MODE 116
- (Continued) 117
- Ifproblemcontinues,replawCPU 118
- Using the HP-UX ce.utilities 120
- ./help <Return > 121
- SIW Refer to the Series 300 121
- . Peripherals 123
- Field Replaceable Units 125
- Quantum (400t/425t) 126
- A1630-60011 A1630-69011 126
- Hem icnher~ 127
- (Refer to Figure 7-2) 129
- (Rejir to Figure 7:2) 130
- Part No 130
- Diagrams 133
- L‘“‘“‘“F!!S!?W 134
- --0’’’”= 135
- -t&i&Ii 1“””’g~wi;: 136
- ,.,::,,: 139
- Reference Manuals 141
- Order Number A1630-90009 143
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