Service manual

H/Z-100 Service Bulletins
156163" indicates an HE 150-156 Winchester and HE 150-163 floppy are installed.
A cross-reference of drive numbers is provided below. Any Z-100 series computer
not having a drive code have an HE 150-142 floppy and/or an HE 150-156
Winchester.
Drive Model Upgrade Part
Code: Type: Kit: Number:
156 Winc Z-217-2 HE 150-156
163 Flop Z-207-7 HE 150-163
164 Winc Z-217-21 HE 150-164
167 Winc ----- HE 150-167
168 Flop Z-207-71 HE 150-168
169 Flop ----- HE 150-169
FSB-Z100-053: Cabinet Cross-Reference
The cabinet parts for the Low Profile and All-In-One computers were standardized in
later production. The old and new part numbers are listed below. Each new part was
aluminized for RFI shielding.
Cabinet Old New
Part: Model: Part #: Part #:
Cover LoPro HE 92-758 HE 92-790
Bottom All HE 92-759 HE 92-791
Cover AIO HE 92-761 HE 92-792
Center AIO HE 92-762 HE 92-793
FSB-Z100-054: Z-120 Video Monitor Board; Q401 Has Two Numbers
Q401 (HE 234-273) on the Z-120 video monitor board can be either type HE 121-
1058 or HE 121-1034. Please note this in your Z-100 Service Data Manual, video
monitor parts list, page 6-19, and on the schematic.
FSB-Z100-055: New S-100 Card Cage Bracket
A universal card cage bracket accommodating both half-height and full-height drives
was used in later models.
FSB-Z100-056: Motherboard SW101 Has Two Styles
Newer (HE 181-4106) motherboards used a different style DIP switch at SW101 to
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