Compaq Prolinea 575
resources page

(c) 1994 1995 Compaq

Assembled in Singapore

series 351V5 home
serial 85356NA21352

<Click to enlarge>



Compaq Prolinea Service Manual (PDF- 1.12Mb)








hard disk unit Quantum Fireball(tm) EX 3.5 Series


Compaq Prolinea mother board jumper settings (PDF- 1 page- 227Kb)

Power Supply Series PS2021 Part No 214978-001 Replace with Compaq Spare 214969-001 Model PS-5151-4C

Pentium 75 Computer with 32MB RAM (4 Memory Module Slots (add by pairs))- 1 Serial Port, 1 Parallel port, 1 VGA interface, 1 keyboard PS/2, 1 mouse PS/2, 5 ISA , 2 PCI, 1 Floppy, 1 IDE, & 1 CD-ROM

SW1 1,2 OFF : Processor Clock Speed 60/90 MHz

1 External Clock Battery Connector E5

Replace CMOS Battery only with Compaq Spares P/N 160274-001

VESA Connector

1 MB Video Memory Expansion Socket

Jumper E6 Power-ON password : 1-2 : Allows Power-On password Security feature ; 2-3 : Clears Power-On password

HDU Quantum Fireball EX3.2A 3079MB w/418Kb Cache C/H/S 702/128/63 hard disk unit

main board assembly no 003816-12-NS1-HM assembled in Singapore Compaq (c) 1994,1995 Diagram No 003811 Processor board JW/mlc A7W REV. D board No 003812-001


1 2 CPU

ON OFF 50/75

OFF OFF 60/90

ON ON 50/100

OFF ON 60/120

configured Off Off (60/90) ; Jumper E6 (1-2); Jumper E5 (1-2)

beeper CMX-05 95'E STAR speaker SPK1

Backup Lithium Battery : Rayovak CR2335 3 Volts made in USA

Intel plcc-44 keyboard controller L5221817 128251-001 COMPAQ '91 - Intel '77

Eprom 172588-015 copyright Compq '95

National Semiconductor S9524JX 129382-005 Compaq

NEC 172030-002 Compaq µPD65804GD-024 datecode 9509

NEC 172020-002 µPD931320D-LGD datecode 9528

ICS 520292 ICS9158-03B datecode 9527

3x Motorola 74F244

8x Motorola 74F245



Cirrus Logic CL-GD5434-J-DC-F datecode 9531

Video RAM Fujitsu 814260-70 datecode 9526

LSI L1A9562 Compaq (datecode 9530)

2 x SAMSUNG SG-DMC2 148020-002 519A Compaq Korea

2 x MT 58LC32K 36B21LG

72-pin EDO DRAM Modules x6 32Mbytes Memory total

1x DS1488M, 2x DS1489M

2x 74LS165A


ST 25C1 B




plcc-20 pal 172870-000 Compaq '94

crystal 32768KHz ; 14.312 MHz

ICS ICS9158-03B 520292 datecode 9527

SUBD-HD15 VGA connector ; SUBD-25F paeallel connector ; SUB-D9M RS232 connector; Mini-DIN PS/2 Mouse & Keyboard


Power Supply PS2021 Series Compaq 214978-001 replace with Compaq spare No :214969-001 PS-5151-4C

P1 connector :

orange +12VDC

blue -12VDC

brown/white : -5VDC

black GND

black GND

black GND

red +5VDC

red +5VDC

red +5VDC


P2 connector

yellow GND???

black GND

black GND

grey +3.4VDC

brown +3.4VDC

brown +3.4VDC

white +3.4VDC

purple GND???



+5V 18A Max.

+3.4V 10A Max

+12V 4A

-5V 0.15A

-12V 0.15A

PS2021 (Part No: 213928-001) has:

P1 connector :

orange +12VDC

blue -12VDC

red/white : -5VDC

black GND

black GND

black GND

red +5VDC

red +5VDC

red +5VDC

P2 connector


black GND

black GND


brown +3.4VDC

brown +3.4VDC

white +3.4VDC via 10ohm resistor

purple GND via 10ohm resistor

The "via 10ohm resistor" above indicates: a 10ohm resistor (small - 1/8 watt (??)) in parallel with 0.01 uF (??) ceramic capacitor (to GND or +3.4VDC).

1 ISA Ethernet 10 base T Network Card SMC UltraChip 83C790QF datecode 9508 60-600464-002 REV A 1395 ELEC 5 - serial eeprom NS 93C14MB


1 PCI Ethernet 10 base T Network Card : NetGear FA311 REV-B1 National DP83815DVNG Delta LF8271 0123 P/N 6804031105 REV:B2


floppy Sony MPF520-4



floppy mitsubishi




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M-à-j: 9 mars, 2019.