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Compaq portable 286 power supply failure
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Popular Compaq Portable 286 Manual Pages
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 3
... Service Guide is a troubleshooting, maintenance, and repair guide that all peripheral devices be used as a reference when servicing the COMPAQ Portable Computer, the COMPAQ PLUS Personal Computer, and the COMPAQ PORTABLE 286 Personal Computer.
Alpha #54xx; All troubleshooting and repair procedures are automatically executed when you do not attempt to this may occur during the Power...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 4
... and Codes" lists and describes the Power On Self Test (POST) and DIAGNOSTICS Error Codes. Chapter 7 "Removal and Replacement Procedures" describes how to execute them. It also provides instructions for the COMPAQ Portable, the COMPAQ PLUS, and the COMPAQ PORTABLE 286 Personal Computers. Required Tools and Supplies
To service the COMPAQ Portable, COMPAQ PLUS, and COMPAQ PORTABLE 286 Personal...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 5
Power Supply socket adjustment tool -
T-10 socket - 3/16 inch socket - 5/16 inch adjustable socket
Additional Information
The following documentation and related software are available to support these and other COMPAQ computer products. Associated Documentation:
o COMPAQ PORTABLE COMPUTER OPERATIONS GUIDE (PN 100001-001) o COMPAQ PLUS PERSONAL COMPUTER OPERATIONS GUIDE (PN 100633-001 *) o ...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 19
... problem is turned on. Power On Self Test Error Messages for the COMPAQ PORTABLE 286
Personal Computer
Message
Beeps
Probable Failure
101 -
Error Messages and Codes
Chapter 5.1 Introduction
This section provides Power On Self Test error messages, DIAGNOSTIC error codes, and memory error codes.
ROM Error
1 Long, System ROM
1 Short
102 - Memory Size Error
2 Short SETUP...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 20
...
None
Expansion RAM (Main Memory on COMPAQ
YYZZ *
PORTABLE 286)
Audible
1 Short Power On successful: COMMON (6 MHz)
speed
Audible
2 Short Power On successful: FAST (8 MHz)
speed
RESUME = "F1" KEY
None
Any failure
* See Section 5.4, "Memory Error Codes," for the location of the defective
memory chip.
Power On Self Test Error Messages for the location of...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 21
... a problem while running the COMPAQ DIAGNOSTICS Program. In each step is completed, run the DIAGNOSTICS Program. These error codes help identify possible defective subassemblies. Follow this procedure until the DIAGNOSTICS Program no longer detects an error condition. DIAGNOSTIC Error Codes
Error
Error
Required
Code
Description
Action
Processor
1yy -
If the error code...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 33
... a memory error code that specifies which chip or chips are at fault, or 2) the problem may be due to format
1. 1906 - 07 Tape already servo written
Error
Error
Required
Code
Description
Action
Tape Drive
19yy - Replace the diskette/tape
1906 - 11 Drive recalibration error
controller board.
4. The second part contains memory error codes for the COMPAQ PORTABLE 286...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 36
... and COMPAQ PLUS Memory Error Codes
Memory error codes for the COMPAQ Portable and COMPAQ PLUS Personal Computers will appear in which the error occurred)
YY - Denotes the failed bit
Once all corrections have been completed and all boards have been reinstalled in the system, begin the problem isolation procedure again to verify proper operation of
Code
Description
Failed Chip
Required...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 47
...available
Table 6.2-3. COMPAQ PORTABLE 286 Personal Computer Parts List:
Common Chassis (Front) - A
Item Number Part Number
Description
1
105034-001 **
Monitor Assembly
2
102709-001 *
Screw, 4-40 1/4 T-10 Torx
3
100436-002 **
High Voltage Access Plate
4
101747-001 **
Storage Drive Access Plate
5
101029-003 **
Board Slots Access Plate
6
102709-001 *
PC Board Retainer...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 49
...14
102709-001 *
Security Lock Switch
* These parts are all included in the Miscellaneous Hardware Kit
(PN 102709-001).
** Part number no longer available
Table 6.2-5. COMPAQ PORTABLE 286 Personal Computer Parts List:
Mechanical Chassis (Rear)
Item Number Part Number
Description
1
102709-001 *
Printed Circuit Board Standoff
2
102818-001 **
Power Supply Board Assembly
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 50
COMPAQ PORTABLE 286 Personal Computer Parts List:
Monitor Enclosure (Front)
Item Number Part Number
Description 3
101796-001 **
Fan/Bracket Assembly
4
102709-001 *
Drive Ground Strap
5
102709-001 *
Drive Shock Mount
6
101795-001 **
System Board Assembly
7
101795-001 **
System Board Support Bracket
8
102709-001 *
Screw, 4-40 1/4 T-10 Torx
9
102709-001 *
Screw, 8-32 x 3/8 ...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 51
COMPAQ PORTABLE 286 Personal Computer Parts List:
System Chassis (Front)
Item Number Part Number
Description
1
102933-001 *** **
System Power Cable
2
102709-001 *
Screw, 6-32 x 1/4 T-15 Torx
3
100429-001 **
Blank I/O Mounting Bracket
4
102709-001 *
Screw, 4-40 x 1/4 T-10 Torx
5
102709-001 *
Washer, Internal Tooth
6
102709-001 *
4-...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 58
... rear of the computer (Figure 7.6-1). Lift it off and set it aside.
Loosen (DO NOT REMOVE) the five retaining screws that secure the mass
storage device access plate (Figure 7.6-1). 3. To replace the mass storage device access plate, reverse Steps 1 through 3
CAUTION In the COMPAQ PORTABLE 286 Personal Computer, the mounting screw on the fixed disk...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 59
... Computer has a serial number below 1524020B0001, follow the procedures beginning in the COMPAQ PORTABLE 286 Power Supply Subassembly Removal and Replacement section. Figure 7.8-1 shows the location of the power supply subsystem. Chapter 7.8 Power Supply Subsystem Removal and Replacement
For COMPAQ Portable or COMPAQ PLUS Personal Computers with a serial number 1524020B0001 or above and for...
Compaq Portable Computer, Compaq Plus Personal Computer, and Compaq Portable 286 Personal Computer Maintenance and Service Guide - Page 60
... AC line fuse:
1. Pry outward with serial numbers below 1524020B0001)
This power supply subsystem consists of the AC line fuse, the power switch filter assembly, the power supply assembly, and the fan/bracket assembly. COMPAQ Portable Power Supply Subsystem Removal and Replacement (for COMPAQ Portable and COMPAQ PLUS Personal Computers with enough pressure to force the fuse box out of the...
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