HP 425s Specifications Page 90
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Continue on with Step 5, Step 6, or Step 7, depending on the configuration of
the dc output voltages.
5. I&h;t~~soutput voltages are not present at JO04,perform the following
A. Check the ac outlet for wer with a voltmeter. If the ac outlet
r“
power is incorrect, an e ectrrclan
must correct it.
B. With the power-on switchopen, use a voltmeter to check Pin 8 on
the JO04connector for +16 to +20 V dc. If the voltage is not cor-
rect, replace the power supply.
If the voltage is corrcxt at Pin 8, close the power-on switch.If you
read Pin 8 at ound, replacx the power supply.If you still detect
r
+16 to +20 dq replace the power-on swrtch anel. ‘Ifthe new
Ls#.~: doesn’t f~ the problem, replace these FR sin the following
Ribbon Cable (connectsLED board to CPU board)
LED Board
CPU Board
You can check these FRUS before you replace them by checkhg
the power-on switchcircuits for continuity, as shown in Table 4-2.
Checkfor continuity with Connectors JO04and JO02unplu cd.
?“Refer to Fimtre 4-12 for the locations of the uxmectors an pms
listed in Table &2.
Table 4-2. Switch Circuit FRU Pin Numbers
lb CheckThis FRU
Cheek for Continuity Between
These ‘NO Connectors
mu
Connector Pin to Connector Pin
CPU
Board
CablefromLEDRoardto CPUBoard
LED
Board
SEi!s
CPU Board
JO04 20 JOO1 1
I
Cable from LED Board to CPU
Board
JOO1 1 JOO1 1
IXD Board
JOO1 1
JO02 3
448
Troublahooting
- 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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