IBM PS2 N45 SL Hardware Maintenance Reference: Difference between revisions

Latest revision as of 21:27, 30 September 2026

The IBM PS/note Model N45SL Hardware Maintenance Reference is IBM's service pamphlet for the PS/note N45SL notebook (type 2614), which IBM's introduction describes as a Personal Computer AT-compatible notebook computer. The cover gives the date 15 May 1992, part number 42G0485 and form number S42G-0485-00; the edition notice says First Edition (June 1992). The PDF has 77 pages and is an image-only scan with no text layer; PDF pages 1 and 4 are both the cover, and several pages are blank.

The cover states that the pamphlet "is intended to be used with" the IBM Personal System/2 Hardware Maintenance Reference (part number 15F2190, form number S15F-2190-00) and the Hardware Maintenance Service manual (part number 15F2200, form number S15F-2200-00). Chapter 1 also lists a separate N45SL Hardware Maintenance Service manual, the Guide to Operations and the Advanced Diagnostics diskette as related material.

Chapter	Subjects	Page
1. Introduction	related materials, tools, safety precautions, the base computer (main board, DC-to-DC converter board, top cabinet assembly, expansion memory board, hard disk, diskette drive, keyboard, battery pack), optional hardware	1-1
2. Operation	power-up and reset, the Monitor program, booting from disk, the Monitor diagnostics (including keyboard and base memory tests), reprogramming the Flash BIOS	2-1
3. Disassembly and Options	battery pack, clearing the passwords, keyboard, cabinet top, battery cable and contacts, mouse board, diskette drive, hard disk, expansion memory board and bracket, backup battery, modem cable, DC-to-DC board, main board, cabinet bottom, port bay door; installing memory modules, math coprocessor and modem	3-1
Specifications	power, LED indicators, processors, memory and memory map, input/output, video, disk drives, power connectors, keyboard, dimensions, weight, environment	S-1

Figures a repairer can use

AC adapter (S-1): input 90-264 V AC at 48-62 Hz; output 22 V DC ±10 % at 1.27 A; five-pin connector (1 charge voltage, 2 system voltage, 3 charge control, 4 and 5 ground).
Internal DC conversion (S-1): +5 V ±5 % at 2.00 A, -10 V ±20 % at 0.05 A, -18 V ±2 V at 0.03 A, and 300 V AC ±100 V at 30 kHz (5 W maximum).
Battery pack (S-2): 14.4 V, 1.7 Ah, 24.48 Wh, with overcharge and short-circuit protection; initial charge 10 hours, normal recharge 3 hours; charge current fast 1.27 A, normal 0.27 A, trickle 0.08 A.
Backup battery (S-2): a 4.8 V NiCad pack (0.6 Ah, 2.88 Wh) that keeps the real-time clock and CMOS memory alive and powers the machine in rest mode. Removing it (procedure on p. 3-19) deletes the stored configuration.
Processor (S-4): Intel 80386SL at 25 MHz, or 6.25 MHz in slow mode; optional 80387SX or 80387SL.
Clearing the passwords (p. 3-3): with the battery pack out, bridge the two pins on each side of the math coprocessor socket with a clip lead, refit the pack and power on until the LEDs blink and the machine locks (under 20 seconds), then remove the jumper and cold-reset by holding the lid switch and pressing the power button.

What this manual does not contain

There is no Symptom-to-FRU index and no parts list with FRU numbers; those were in the separate N45SL Hardware Maintenance Service manual. There is no schematic and no component value. The N45SL is also covered by IBM Mobile Systems Hardware Maintenance Manual Volume 1 (1995).

Download: IBM PS2 N45 HMR.pdf

Related pages

@@ Line 1: / Line 1: @@
-The '''IBM PS/2 N45 SL Hardware Maintenance Reference''' is IBM's 77-page service pamphlet for the PS/2 Notebook N45 SL (type 2614), dated '''15 May 1992''', '''part number 42G0485, form number S42G-0485-00'''.
+The '''IBM PS/note Model N45SL Hardware Maintenance Reference''' is IBM's service pamphlet for the PS/note N45SL notebook (type 2614), which IBM's introduction describes as a Personal Computer AT-compatible notebook computer. The cover gives the date 15 May 1992, part number 42G0485 and form number S42G-0485-00; the edition notice says First Edition (June 1992). The PDF has 77 pages and is an image-only scan with no text layer; PDF pages 1 and 4 are both the cover, and several pages are blank.
-Like every model-specific PS/2 pamphlet, it states on its first page that it "is intended to be used with the IBM Personal System/2 Hardware Maintenance Reference manual (part number 15F2190, form number S15F-2190-00) and the IBM Personal System/2 Hardware Maintenance Service manual (part number 15F2200, form number S15F-2200-00)". Those two general binders are not hosted here.
+The cover states that the pamphlet "is intended to be used with" the ''IBM Personal System/2 Hardware Maintenance Reference'' (part number 15F2190, form number S15F-2190-00) and the ''Hardware Maintenance Service'' manual (part number 15F2200, form number S15F-2200-00). Chapter 1 also lists a separate N45SL ''Hardware Maintenance Service'' manual, the ''Guide to Operations'' and the Advanced Diagnostics diskette as related material.
-== What it contains ==
+== Contents ==
-Model-specific service material for the N45 SL: product description and system board features, the checkout and undetermined-problem procedures, power and battery checks appropriate to a battery machine, the symptom-to-FRU index, the removals and replacements sequence, the location views and the parts catalogue with FRU numbers.
+Page numbers are the book's own.
-== What it does not contain ==
+{| class="wikitable" style="width:80%;"
+! Chapter !! Subjects !! Page
+|-
+| 1. Introduction || related materials, tools, safety precautions, the base computer (main board, DC-to-DC converter board, top cabinet assembly, expansion memory board, hard disk, diskette drive, keyboard, battery pack), optional hardware || 1-1
+|-
+| 2. Operation || power-up and reset, the Monitor program, booting from disk, the Monitor diagnostics (including keyboard and base memory tests), reprogramming the Flash BIOS || 2-1
+|-
+| 3. Disassembly and Options || battery pack, clearing the passwords, keyboard, cabinet top, battery cable and contacts, mouse board, diskette drive, hard disk, expansion memory board and bracket, backup battery, modem cable, DC-to-DC board, main board, cabinet bottom, port bay door; installing memory modules, math coprocessor and modem || 3-1
+|-
+| Specifications || power, LED indicators, processors, memory and memory map, input/output, video, disk drives, power connectors, keyboard, dimensions, weight, environment || S-1
+|}
-'''Module level only.''' IBM serviced these machines by field-replaceable-unit exchange, and this pamphlet reflects that: it names FRU part numbers, not component values. There is no capacitor list, no resistor list, no semiconductor list and no schematic anywhere in it. The power supply, the planar and each drive are single line items in the parts catalogue. This is why no IBM machine checked in this wiki's verification drive has a published component-level capacitor list &mdash; it is not that the manuals were lost, it is that IBM never wrote one.
+== Figures a repairer can use ==
-It is also '''not a standalone book'''. IBM issued it as a pamphlet to be filed in a binder alongside the general-purpose ''IBM Personal System/2 Hardware Maintenance Reference'' (part number 15F2190, form number S15F-2190-00) and ''Hardware Maintenance Service'' (part number 15F2200, form number S15F-2200-00), which carry the safety information, the general checkout procedure and the option and adapter sections. Those two general volumes are not hosted here.
+* AC adapter (S-1): input 90-264 V AC at 48-62 Hz; output 22 V DC ±10 % at 1.27 A; five-pin connector (1 charge voltage, 2 system voltage, 3 charge control, 4 and 5 ground).
+* Internal DC conversion (S-1): +5 V ±5 % at 2.00 A, -10 V ±20 % at 0.05 A, -18 V ±2 V at 0.03 A, and 300 V AC ±100 V at 30 kHz (5 W maximum).
+* Battery pack (S-2): 14.4 V, 1.7 Ah, 24.48 Wh, with overcharge and short-circuit protection; initial charge 10 hours, normal recharge 3 hours; charge current fast 1.27 A, normal 0.27 A, trickle 0.08 A.
+* Backup battery (S-2): a 4.8 V NiCad pack (0.6 Ah, 2.88 Wh) that keeps the real-time clock and CMOS memory alive and powers the machine in rest mode. Removing it (procedure on p. 3-19) deletes the stored configuration.
+* Processor (S-4): Intel 80386SL at 25 MHz, or 6.25 MHz in slow mode; optional 80387SX or 80387SL.
+* Clearing the passwords (p. 3-3): with the battery pack out, bridge the two pins on each side of the math coprocessor socket with a clip lead, refit the pack and power on until the LEDs blink and the machine locks (under 20 seconds), then remove the jumper and cold-reset by holding the lid switch and pressing the power button.
-'''No text layer''' &mdash; an image-only scan.
+== What this manual does not contain ==
-== What it settles ==
+There is no Symptom-to-FRU index and no parts list with FRU numbers; those were in the separate N45SL Hardware Maintenance Service manual. There is no schematic and no component value. The N45SL is also covered by [[IBM Mobile Systems Hardware Maintenance Manual Volume 1]] (1995).
-The N45 SL is also covered, alongside the L40 SX, CL57, N51, P70/P75 and the early ThinkPads, by [[IBM Mobile Systems Hardware Maintenance Manual Volume 1]]. If you are working on an N45 SL, read both: the Volume 1 treatment is the later and fuller of the two.
 <pdf> File:IBM PS2 N45 HMR.pdf </pdf>
-Download it here: [[:File:IBM PS2 N45 HMR.pdf|IBM PS2 N45 HMR.pdf]]
+Download: [[:File:IBM PS2 N45 HMR.pdf|IBM PS2 N45 HMR.pdf]]
 == Related pages ==
-* [[IBM Mobile Systems Hardware Maintenance Manual Volume 1]] &mdash; also covers the N45SL (2614)
+* [[IBM Mobile Systems Hardware Maintenance Manual Volume 1]]
-* [[IBM PS2 Model P70 386 Hardware Maintenance Reference]]
+* [[Battery Refurbishment]]
-* [[Battery Explosion, Capacitor or Corrosion Damage]] &middot; [[Battery Refurbishment]]
 [[Category:IBM Service Manuals]]
 [[Category:Service Manuals]]

Josh (talk | contribs)

Latest revision as of 21:27, 30 September 2026

Contents

Figures a repairer can use

What this manual does not contain

Related pages