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GENERAL
The CPR consists of the following components.
• PZ-PW92
:
This card supplies operating power to the CPR and the circuit cards mounted in slots 00 to
04 of the LPR.
• PZ-IO27
:
Floppy Disk Drive (FDD) and Hard Disk Drive (HDD) are mounted on this card.
• CPU Board
:
This card mainly contains Central Processing Unit (CPU), Random Access Memory (RAM),
Boot ROM, ISA Bus Controller and FDD/HDD Controller.
• PZ-GT17
:
This card connects the CPU with the Local I/O Bus and Misc Bus, permitting the CPU to
directly control the INT/TSW, EMA, IOC and other miscellaneous circuit cards mounted in
IMG0.
• PZ-GT18
:
This card connects the CPU with the Local I/O Bus, HSW I/O Bus and Misc Bus, permitting
the CPU to directly control the INT/TSW, HSW and other miscellaneous circuit cards
mounted in IMG1 and IMG2.
• PZ-GT19
:
This card connects the CPU with the Local I/O Bus, HSW I/O Bus and Misc Bus, permitting
the CPU to directly control the INT/TSW, HSW and other miscellaneous circuit cards
mounted in IMG3.
SW
I
ON
O
OFF
5A
OUT PWR
ON
IN PWR
OFF
PZ-PW92
Note 1 : Factory settings are as follows.
IMGx
IMGxh/dxh
Note 2 : PZ-GT19 is for IMGdxh only.
CHAPTER 1
Page 2
Revision 1.0
HDD
MB
CPU OPE
FDD
MBR
SYSTEM SELECT Note
ON
:
:
Figure 1-2 SN1433 CPRAF-A/SN1435 CPRAH-A
ND-70373 (E)
PZ-GT17(for IMG0)
PZ-IO27
PZ-GT18 (for IMG1/IMG2)
PZ-GT19 (for IMG3)
WDT
GT0
GT1
GT2
GT3
0
1
Front View
SYSTEM SELECT
ON
SYSTEM SELECT
ON
A B
A B
2
3
4
5
6
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