PrintThis document provides technical information about using the jumper blocks on the motherboard.
NOTE: This document contains procedures that are technical. The person performing the procedure should have extensive computer experience working both with hardware and software.
Jumper and switch functions for HP Pavilion 3100 series PCs
| 3100 Series Motherboard Layout Legend | |||
|---|---|---|---|
| A Socket 7 Pentium Processor | B 82438VXsocket | C 82437VX | D DIMM sockets |
| E PCI/ISA Expansion Connector | F 82371SB PCI ISA/IDE Accelerator (PIX3) | G S3 TRIO 64V+ Graphics | H Video memory controller |
| I VGA Feature Connector | J Primary IDE connector | K Secondary IDE connector | L Floppy Drive connector |
| M Battery | N VGA Monitor connector | O Universal Serial Bus connectors | P Microphone connector |
| Q Speaker connector | R Super I/O, RTC and Keyboard controller | S Mouse connector | T Keyboard connector |
| U Parallel port connector | V Serial port connector (COM1) | W Power Supply connectors | |
JCF1/JCF2: Host clock selector
| Host Clock | JCF1 | JCF2 |
|---|---|---|
| 50 | 2 - 3 | 2 - 3 |
| 55 | 1 - 2 | 2 - 3 |
| 60 | 2 - 3 | 1 - 2 |
| 66 (default) | 1 - 2 | 1 - 2 |
JBF0/JBF1: CPU speed multiplier selector
| CPU Multiplier | JBF0 | JBF1 |
|---|---|---|
| x 1.5 | 1 - 2 | 1 - 2 |
| x 2.0 | 2 - 3 | 1 - 2 |
| x 2.5 (default) | 2 - 3 | 2 - 3 |
| x 3.0 | 1 - 2 | 2 - 3 |
JA2V: P55C CPU voltage selector
| P55C Voltage | JA2V |
|---|---|
| 2.84V (default) | 2 - 3 |
JA3V: CPU voltage selector
| CPU Voltage | JA3V |
|---|---|
| 3.38V (default) | 1 - 2 |
| 3.54V | 2 - 3 |
JPWRS: P54C or P55C CPU type selector
| CPU Type | JPWRS 1 , 2 |
|---|---|
| P54C | 1 - 3 , 2 - 4 |
| P55C (default) | 3 - 5 , 4 - 6 |
JBAT: RTC battery enable/disable
| RTC Battery | JBAT |
|---|---|
| Enable (default) | 1 - 2 |
| Disable | 2 - 3 |
JUSBCLK: USB clock selector
| USB Clock | JUSBCLK |
|---|---|
| 24 MHz | 1 - 2 |
| 48 MHz (default) | 2 - 3 |
JWRT: Sound chip EPROM, 24C16, programming control
| 24C16 | JWRT |
|---|---|
| On (default) | Programming 24C16 in manufacturing process |
| Off | Write protect after manufacturing process |
Jumper and switch functions for HP Pavilion 3200 series PCs
| A Socket 7 Pentium Processor | B 430 TXR Chipset socket | C DIMM sockets | D PCI/ISA Expansion Connector |
| E Primary IDE connector | F Secondary IDE connector | G Floppy Drive connector | H Front Panel connectors |
| I Battery | J ATI VT2 2W 3D Graphics Controller | K VGA Feature Connector | L Upgrade Video Memory |
| M 1 Mbyte Video memory | N BIOS Flash ROM | O 16 bit industry standard audio | P VGA Monitor connector |
| Q Universal Serial Bus connectors | R CD-ROM Audio connector | S Speaker connector | T Microphone connector |
| U Mouse connector | V Keyboard connector | W Game port connector | X Parallel port connector |
| Y System fan connector | Z Serial port connector (COM1) | AA Processor fan connector | BB Power Supply connectors |
JBF0/JBF1/JBF2: CPU speed selector
| CPU Multiplier | JBF0 | JBF1 | JBF0 |
|---|---|---|---|
| Pentium (R) 200 MHz with MMX | 1 - 2 | 2 - 3 | 1 - 2 |
| Pentium 233 MHz with MMX | 1 - 2 | 1 - 2 | 1 - 2 |
