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HP ProSignia 120 Maintenance And Service Manual

Download Maintenance and service manual of HP 140 All in One Printer, Copier for Free or View it Online on All-Guides.com. This version of HP 140 Manual compatible with such list of devices, as: 140, 155, 160, 170

Brand: HP

Category: All in One Printer , Copier , Laptop , Printer

Type: Maintenance and service manual

Model: HP 140 , HP 155 , HP 160 , HP 170

Pages: 144 (2.84 Mb)

Download HP 140 Maintenance and service manual

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Page 28
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2-6    Troubleshooting

Fatal errors emit a beep and may display a FATAL message. Fatal errors indicate severe problems, such as a hardware failure. Fatal errors do not allow the
system to resume. Some of the Fatal error beep codes are listed at the end of this section.

Table 2-3

Fatal Error Messages

Message

Description

Beep Code

CMOS RAM test failed

A walking bit test of CMOS RAM location 0E
(Hex) - 3F (Hex) failed.

3

DMA controller faulty

A sequential read/write of the transfer count
and transfer address registers within the
primary and secondary DMA controllers failed.

4

Faulty DMA page registers

A walking bit read/write of the 16 DMA
controller page registers starting at location
80 Hex failed.

0

Faulty refresh circuits

A continuous read/write test of port 61h found
that bit 4 (Refresh Detect) failed to toggle
within an allotted amount of time.

1

Interrupt controller failed

A sequential read/write of various Interrupt
Controller registers failed.

5

ROM checksum incorrect

A checksum of the ROM BIOS does not match
the byte value at F000:FFFF.

2

RAM error at location xxxx

RAM error occurred during memory test.

None

Table 2-4

Fatal Error Beep Codes

Beep Code Beep Sequence

Description

Recommended Action

0

S-S-S-P-S-S-L-P

The DMA page registers are
faulty.

Replace system board.

1

S-S-S-P-S-L-S-P

The refresh circuitry is faulty.

2

S-S-S-P-S-L-L-P

The ROM checksum is incorrect.

3

S-S-S-P-L-S-S-P

The CMOS RAM test failed.

4

S-S-S-P-L-S-L-P

The DMA controller is faulty.

5

S-S-S-P-L-L-S-P

The interrupt controller failed.

6

S-S-S-P-L-L-L-P

The keyboard controller failed.

7

S-S-L-P-S-S-S-P

Graphics adapter is faulty.

8

S-S-L-P-S-S-L-P

Internal RAM is faulty.

Replace memory board or
system board if memory on
system board is faulty.

S = Short, L = Long, P = Pause