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PB540/550/560 Upgrade Information

Battery
BIOS
Cache
CPU
RAM
Video

PB540/550/560 RAM Memory Upgrade

Specifications

1. SIMM speed must be 70ns or faster.
2. The SIMMs are 72-pin and can be x32 or x36. The motherboard design does not require parity checking, hence the cheaper x32 SIMMs can be purchased. The motherboard will not use EDO, only Fast Page Mode SIMMs will operate correctly in this motherboard.
3. Some motherboards may have 2 or 4 SIMM sockets. Therefore, allowing a maximum of either 72 or 136 MB. Socket Locations SIMMs are inserted in Bank A or B, sockets J5D1 - J6D1. One Bank must be filled when the upgrade is done. Most systems will have a second bank (A) for a maximum of 136MB.

Upgrade Table 1. Motherboard with two SIMM sockets:

2. Motherboard with four SIMM sockets:

Purchase Referrals For information on obtaining additional memory modules for this system, please contact Packard Bell end user Service (801) 579-0160.

CPU Upgrade

Warning Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system herself/himself should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty.

Note

Each motherboard can accommodate the following CPUs:

Intel Pentium 75MHz

Intel Pentium 90MHz

Intel Pentium 100MHz

The PB540/550/560 is only upgradable with the Pentium Overdrive for Pentium Systems.

P5T (Pentium OverDrive Processor for Pentium Systems)

Jumper Settings

CPU Type

J1J1: CPU Base Speed

J1J2: Clock Multiplier

Pentium 75MHz 1-2 2-3

Pentium 90MHz 2-3 2-3

Pentium 100MHz 1-2 1-2

PB540/550/560 Battery Upgrade

Specifications The battery is a Dallas DS 12887 real time clock and CMOS battery integrated into the RTC chip.

PB540/550/560 BIOS Upgrade

Specifications

The BIOS in the PB540/550/560 is contained in Flash EEPROM, and it can be updated via software. If the Flash BIOS is corrupted during an update, it is possible to recover it.

BIOS Update

1. Insert the update diskette into drive A: and reboot the system.
2. The following dialog box will appear:

3. Press <Enter>.
4. The Main Menu will appear on the screen:

5. Select "Update Flash Memory Area from a file" using the Down Arrow key.
6. Press <Enter>.
7. The UPDATE FLASH AREA dialog box appears on the screen:

8. Select "Update System Bios".
9. Press <Enter>.
10. The following dialog box will appear:

11. Press the Down Arrow key to select 1007BC0R.BIO file.
12. Press <Enter>.
13. The following dialog box will appear on the screen:

14. Highlight the <Continue with Programming> and press <Enter>.
15. The following message will appear:

16. Remove the disk from drive A and press <Enter>.

BIOS Recovery

To recover from a corrupted BIOS, perform the following steps:
1. Turn off the system.
2. Remove the system's case and move the jumper block on J1H1 from pins 2-3 to pins 1-2. Leave the jumper block on J1H2 pins 1-2 in place.
3. Place the update diskette in drive A: and turn on the system.
4. There will be no video display during the BIOS recovery, this is due to the small amount of code available in the non-erasable boot block area.
5. After the system boots, it will beep once and the floppy drive light should light up. The system is copying the recovery code into the Flash EEPROM.
6. Just before the recovery completes, the system will beep twice. Once this occurs, watch the floppy drive light. When the light goes off, turn off the system.
7. Move the jumper block on J1H1 from pins 1-2 back to pins 2-3.
8. Turn the system on and repeat the steps for updating the BIOS.

PB540/550/560 Cache Upgrade

Specifications

Write back cache 16KB Internal Cache (integrate into the CPU)

256KB Secondary External Cache (Soldered on-board)

Not upgradable.

PB540/550/560 Video RAM Upgrade

Specifications

The PB540/550/560 can be upgraded to 2MB video memory using two 256Kx16-70ns SOJ DRAM chips. The following brands and part numbers are recommended:

Manufacturer

Part No(S).

Fujitsu MB814260-70J-ER

Hitachi HM514260AJ-7T

Micron Technology MT4C16257DJ-7TR

Mitsubishi M5M44260-AJ-7-T10

NEC UPD42S42560LE-70ITR or UPD42460LE-70ITR

Samsung KM416C256AJ-7T or KM416C256BJ-7T

Toshiba TC514260BJ-7(EL)

Location

The video memory upgrade is inserted in sockets U2J1 and U3J1. Pin 1 is at the front right corner of the socket. To install the chip, insert it into the socket and push it on the chip until it snaps into place.

Specifications

Part

Equivalent PB Part

2 - 256KB x 16, 70ns OJ DRAM TC514260BJ-70 080378


Warning	Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system herself/himself should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty.


Warning	Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system herself/himself should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty.


Note
Each motherboard can accommodate the following CPUs:
Intel Pentium 75MHz
Intel Pentium 90MHz
Intel Pentium 100MHz

The PB540/550/560 is only upgradable with the Pentium Overdrive for Pentium Systems.
P5T (Pentium OverDrive Processor for Pentium Systems)

CPU Type	J1J1: CPU Base Speed	J1J2: Clock Multiplier
Pentium 75MHz	1-2	2-3
Pentium 90MHz	2-3	2-3
Pentium 100MHz	1-2	1-2

Write back cache	16KB Internal Cache (integrate into the CPU)
	256KB Secondary External Cache (Soldered on-board)
	Not upgradable.

Manufacturer	Part No(S).
Fujitsu	MB814260-70J-ER
Hitachi	HM514260AJ-7T
Micron Technology	MT4C16257DJ-7TR
Mitsubishi	M5M44260-AJ-7-T10
NEC	UPD42S42560LE-70ITR or UPD42460LE-70ITR
Samsung	KM416C256AJ-7T or KM416C256BJ-7T
Toshiba	TC514260BJ-7(EL)


Specifications	Part	Equivalent PB Part
2 - 256KB x 16, 70ns OJ DRAM	TC514260BJ-70	080378