PowerBook 180
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| PowerBook 180 (Felix Winkelnkemper, Wikimedia Commons, CC BY-SA 4.0) | |
| Specifications | |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Type | Notebook computer |
| Released | 19 October 1992 |
| Discontinued | 1 May 1994 |
| Intro price | US$4,110 |
| CPU | Motorola 68030 at 33 MHz; 68882 FPU at 33 MHz |
| Memory | 4 MB pseudostatic RAM; one expansion slot; 14 MB maximum |
| Storage | Internal 1.4 MB floppy drive; 2.5-inch SCSI hard disk (80 or 120 MB) |
| Display | 10-inch backlit active-matrix LCD, 640 × 400, 16 greys |
| Sound | — |
| ROM | 1 MB |
| Power | 2.5 Ah NiCad main battery; 3 V lithium PRAM battery |
| Dimensions | 2.25 × 11.25 × 9.3 in (5.7 × 28.6 × 23.6 cm) |
| Weight | 6.8 lb (3.1 kg) with battery |
| OS / Firmware | System 7.1 to Mac OS 7.6.1 |
| Predecessor | PowerBook 170 |
| Codename | Converse |
The PowerBook 180 is a notebook Macintosh with a 16-grey active-matrix display, introduced on 19 October 1992 with the PowerBook 160 and discontinued on 1 May 1994.[1] It is the 160 with a 33 MHz processor, a 68882 floating-point unit and an active-matrix display, and it shares the 160's case, boards and Service Source.[2] Low End Mac gives the code name Converse and a launch price of US$4,110. It calls the 180 the first portable Mac with a 16-shade active-matrix display, and with the 160 the first PowerBook to drive an external monitor and take more than 8 MB.[3]
The colour PowerBook 180c followed in June 1993. Apple describes it as identical to the 180 apart from the display and its circuitry, but it is serviced from the 165c/180c Service Source and its display cannot be moved to a 180.[4][5][6]
PowerBook 180 and 180c compared
[edit | edit source]| Item | PowerBook 180 | PowerBook 180c |
|---|---|---|
| Introduced | 19 October 1992[1] | 7 June 1993[4] |
| Discontinued | 1 May 1994[1] | 14 March 1994[4] |
| Display | 10 in active matrix, 640 × 400, 16 greys[2] | 8.4 in active matrix, 640 × 480, 256 colours[7] |
| Display parts | Display 661-0748, inverter 922-0024, display cable 630-6273, inverter cable 936-0106[2] | Display 661-0686, inverter 922-0378, display cable 922-0380, inverter cable 922-0412[7] |
| Power adapter | 17 W[2] | 24 W (M5652)[7] |
| Height and weight | 2.25 in, 6.8 lb (3.1 kg)[2] | 2.34 in, 7.1 lb (3.2 kg)[7] |
| Disks offered | 80 or 120 MB[1] | 80 or 160 MB[5] |
| Gestalt ID | 33[1] | 71[4] |
| Launch price | US$4,110[3] | US$4,160[8] |
PowerBook 180 hardware
[edit | edit source]The 180's motherboard, interconnect board and case are those of the 160 and 165. Its daughterboard, 661-0747, is the one with a 68882 FPU soldered at U27 on the underside.[2] The active-matrix display needs its own inverter board, 922-0024, and its display cable, 630-6273, is the part also used in the PowerBook 170.[2] Apple supplied the display module and its backlight bulb only to its central repair centre (CPRC) and international repairers.[2] Daniel Hansen identifies the panel as a Hosiden HLR1021-101182.[9]
The 180 has 4 MB of PSRAM, takes RAM cards up to 10 MB for 14 MB in all, and needs 85 ns cards.[1] Its external video port drives up to 832 × 624 at 8 bits through an adapter.[1] It supports SCSI disk mode.[3] The SCSI port does not provide termination power and the logic board does not terminate the bus.[2]
On a 160 or 180 with a serial number from FC233xxxxxx to FC241xxxxxx, Apple's Service Source requires the sound jack insulator on the motherboard to be replaced with the revised part, 922-0591, whenever the daughterboard is replaced.[2]
PowerBook 180c
[edit | edit source].jpg)
The 180c's 4 MB of 85 ns PSRAM sits on the RAM/ROM board, leaving the secondary logic board free for the colour display circuitry. The display controller is a Western Digital WD90C26A with Apple's Pangola interface ASIC and 512 KB of DRAM, and the panel is a 640 × 480 TFT with 0.27 mm dot pitch, lit by two cold-cathode lamps.[5] The Service Source gives the screen as 8.4 in, but quotes it as 215 mm in one place and 226 mm in another.[7]
Service points particular to the 180c:[7]
- It must run on the 24 W adapter, M5652. A 180c that powers on and then shuts off as the screen lights up is on a lower-rated adapter.
- The DC/DC converter has a brightness control only, and a shield that must not be removed.
- The display cable ends in two connectors, which Apple disconnects with an IC extractor. The cable is stuck to the back of the display near its base.
- Apple did not replace a 180c display for subpixel faults. Its chart explains that the panel has 921,000 transistors and that red, green, blue, black and white subpixel irregularities are allowed.
starlite reports that a 180c display assembly cannot be fitted to a 180 without changing boards in the lower half of the machine. Kai Robinson notes that the 180c's Sharp panel was also sold as an industrial display; starlite adds that such panels are expensive and that those from China also need recapping.[6]
Known problems
[edit | edit source]Tunnel vision
[edit | edit source]The 180's Hosiden greyscale panel is one of those MacDat lists as subject to "tunnel vision", a dark vignette that creeps in from the corners as the display runs and clears after a few hours switched off. MacDat considers Hosiden's greyscale panels of 1992-1994 "extremely likely" to have it.[10] The colour 180c is not affected.[6]
Owners' results with baking the panel:
- MacDat recommends about 100 °C for a few hours, warns that lower temperatures work poorly and higher ones can damage the panel, and suggests keeping sessions to 4-5 hours.[10]
- bwinkel67 baked a 180 panel for 10 hours at 185 °F with no improvement, then for 4-5 hours at 215-220 °F (about 100 °C), which cleared it. Six months later the screen could be left on for hours without tunnelling.[9]
- Neo117 baked a 180 panel for 5 hours at 191 °F ± 3 °F in a toaster oven, between parchment sheets to even out the temperature, after a dry run with a thermometer. Ten days in a dry box beforehand had made no difference. The panel kept improving for 3-4 days after the bake and was still clear a year later.[6]
- croissantking restored a 180 panel in two bakes without dark spots. He recommends baking the panel with its PCB attached, after removing the backlight tube and diffuser and desoldering the flex connector.[6]
Refitting the panel
[edit | edit source]The panel is held to its board by metal tabs, half of which twist clockwise and half anticlockwise.[6] Neo117 found the display misbehaved unless every tab was pressed down firmly. larsovef, who separated the bare glass from its board, needed several attempts to realign them and had stripes on the screen until every tab was clamped.[6] Tightening the tabs does not cure tunnel vision. On bwinkel67's 180 it delayed the vignette a little but did not stop it.[9]
Image persistence
[edit | edit source]Neo117 saw faint ghosts of windows that had been left on screen for a long time on two 180s, and starlite believes this is normal for the panel type. croissantking notes that under System 7.1 the PowerBook control panel warns about image persistence when sleep is disabled, and Neo117 found that with the PowerBook software installed the screen dims long before ghosting appears.[6]
180c display
[edit | edit source]MacDat calls the 180c's Sharp LQ9D01 display "a recap on sight" and warns that its capacitors leak and cause corrosion that cannot be repaired.[11] BajaTym fitted a recapped LQ9D01 panel to a 180c whose original had heavy vertical banding. White columns then appeared once the machine began booting, and he traced them to the flex-to-PCB connections along the top edge of the panel, which had dark residue around them.[12] On a 180 with similar lines, Yoda found the fault in the main interconnect cable, which he calls a common failure on the 100 series.[12]
Capacitors
[edit | edit source]MacDat reports that the 180's logic board and screen are solid-state. The inverter has a 47 µF 16 V electrolytic and a 33 µF 10 V polymer capacitor, and the trackball one 10 µF 16 V part.[13] The 180c has nine electrolytics on its LCD board.[11] Both are covered on PowerBook 180 Capacitor Replacement Guide.
Maintenance and repair
[edit | edit source]For the PowerBook 180:
- PowerBook 160 General Maintenance
- PowerBook 160 Troubleshooting
- PowerBook 180 Troubleshooting: active-matrix faults and tunnel vision
- PowerBook 180 Capacitor Replacement Guide
- PowerBook 140 Battery Replacement
For the PowerBook 180c:
- PowerBook 180 General Maintenance
- PowerBook 180 Troubleshooting
- PowerBook 180 Capacitor Replacement Guide
Documentation
[edit | edit source]- PowerBook 160, 165 and 180 Service Source: the 180
- PowerBook 165c and 180c Service Source: the 180c
- PowerBook 160 Documentation: the PowerBook 160 and 180 developer note
- PowerBook 165, 165c and 180c Developer Notes: the 180c developer note
Related pages
[edit | edit source]References
[edit | edit source]- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Apple, "Macintosh PowerBook 180: Technical Specifications" (retrieved 2026-10-02). 68030 at 33 MHz with 68882 FPU; video mini-15; 17 W, 2 A, 100-240 V; battery type PB1XX NiCd; 4 MB on the logic board, 4-14 MB, cards of 2, 4, 6, 8 and 10 MB, 85 ns; 128K static RAM for the LCD and 512K VRAM for external video; internal LCD 640 × 400 at 4 bits; external video up to 832 × 624 at 8 bits; introduced 10/19/1992, discontinued 5/1/1994; Gestalt ID 33; 6.8 lb; 2.25 × 11.25 × 9.3 in; original system 7.1 with System Enabler 111; Mac OS 7.1 to 7.6.1; internal hard disk 80 or 120 MB; ROM 1 MB.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 Apple Computer, PowerBook 160/165/180 Series Service Source, hosted here as File:PowerBook 160, 165 and 180 Service Source.pdf (see PowerBook 160, 165 and 180 Service Source). PDF page numbers: display compatibility matrix p. 4; processor p. 6; sound and video p. 13; electrical p. 14; physical p. 15; video symptom charts pp. 28-37; inverter board p. 70; daughterboard identification pp. 84-86; sound jack insulator pp. 88-89; active-matrix display pp. 116, 121; 180 display cable pp. 128-131; AM bulb p. 165; exploded view p. 169.
- ↑ 3.0 3.1 3.2 Low End Mac, "PowerBook 180" (retrieved 2026-10-02). First portable Mac with a 4-bit (16-shade) active-matrix display; replaced the PowerBook 170; with the 160, the first PowerBook to support an external monitor and more than 8 MB of RAM; reintroduced SCSI Disk Mode; code name Converse; introduced 1992.10.19 at US$4,110, discontinued 1994.05.01; 9.8-inch 640 × 400 4-bit active-matrix display; power supply M5651, 19 W, 2 A. Secondary source.
- ↑ 4.0 4.1 4.2 4.3 Apple, "Macintosh PowerBook 180c: Technical Specifications" (retrieved 2026-10-02). 68030 at 33 MHz with 68882 FPU; 24 W, 3.2 A; 4-14 MB, 85 ns; internal LCD 640 × 480 at 8 bits; 512K VRAM for external video; introduced 6/7/1993, discontinued 3/14/1994; Gestalt ID 71; 7.1 lb; 2.34 × 11.25 × 9.3 in; original system 7.1 with System Enabler 131 v1.0; Mac OS 7.1 to 7.6.1; internal hard disk 80-160 MB.
- ↑ 5.0 5.1 5.2 Apple Computer, Macintosh PowerBook 180c Developer Note, hosted here as File:PowerBook 180c Developer Note.pdf (see PowerBook 165, 165c and 180c Developer Notes). PDF page numbers: introduction and features pp. 12-13; compatibility and Gestalt value p. 15; RAM p. 18; colour LCD interface p. 19; LCD screen p. 20.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 TinkerDifferent forum thread "Powerbook 180 & Tunnel Vision", July 2025 to September 2026. Neo117: ten days in a dry box at 15% humidity made no difference to a 180 panel; a 5-hour toaster-oven bake at 191 °F ± 3 °F between parchment sheets, after a dry run with a thermometer, cleared it, the panel improved further over the next 3-4 days and was still clear after a year; half the panel tabs twist clockwise and half anticlockwise; every tab must be pressed down firmly; a co-worker's 170 baked cooler improved, and a second hotter bake cured it but left black spots. croissantking: two bakes on a 180 without spots; bake the panel with its PCB attached, removing the backlight tube and diffuser and desoldering the flex; the System 7.1 PowerBook control panel warns of image persistence when sleep is disabled. larsovef: a bare panel needed several attempts to realign with its board, with stripes until every tab was clamped. Kai Robinson: only monochrome panels are affected; the 180c's Sharp panel was also sold as an industrial display. starlite: those panels are expensive and need recapping; faint window ghosting is probably normal for the panel type; a 180c display assembly cannot be fitted to a 180 without changing boards in the lower half. Community experience.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 Apple Computer, PowerBook 165c/180c Service Source, hosted here as File:PowerBook 165c and 180c Service Source.pdf (see PowerBook 165c and 180c Service Source). PDF page numbers: display compatibility matrix p. 4; configurations p. 7; sound and video p. 15; electrical p. 16; physical p. 17; power symptom charts pp. 27-30; video symptom charts pp. 31-39; DC/DC converter pp. 70-74; display pp. 116-120; display cable pp. 123-126.
- ↑ Low End Mac, "PowerBook 180c" (retrieved 2026-10-02). Active-matrix 256-colour screen added to the PowerBook 180; battery life reduced to about one hour; code name Hokusai; introduced 1993.06.07 at US$4,160, discontinued 1994.03.14; 8.4-inch 8-bit 640 × 480 colour active-matrix display; power supply M5652, 24 W. Secondary source.
- ↑ 9.0 9.1 9.2 TinkerDifferent forum thread "Tunnel vision on PB170", January to December 2022. Daniel Hansen: Hosiden HLR1014-101125 for the 170 and HLR1021-101182 for the 180; bwinkel67: tightening the panel tabs on a 180 delayed the tunnelling but did not stop it; 10 hours at 185 °F made no difference; 4-5 hours at 215-220 °F (about 100 °C) cleared it, and the panel was still clear about six months later. Community experience.
- ↑ 10.0 10.1 MacDat Knowledge Base, "LCD Tunnel Vision" (retrieved 2026-10-02). Hosiden TFT panels only, mostly monochrome and greyscale; Apple models affected: Macintosh Portable, PowerBook 170, 180, Duo 250, Duo 280, 540; Hosiden greyscale panels of 1992-1994 extremely likely to have it; moisture through a defective seal the most accepted theory; bake at 100 °C for a few hours; lower temperatures work poorly and higher can cause damage; repeated long sessions have left dead pixels and polariser damage; sessions of 4-5 hours suggested. Secondary source.
- ↑ 11.0 11.1 MacDat Capacitor Reference Library, "Capacitor Reference - PowerBook 180c" (retrieved 2026-10-02). No electrolytics on the logic board; Sharp LQ9D01 LCD four 47 µF 16 V, two 10 µF 25 V and three 10 µF 16 V surface-mount electrolytics, "a recap on sight"; replace with electrolytic, polymer or tantalum, not ceramic; trackball one 10 µF 16 V. Secondary source.
- ↑ 12.0 12.1 TinkerDifferent forum thread "PowerBook 180c -- Vertical White Column Lines", September 2026. BajaTym: original panel banded from leaking capacitors; a recapped Sharp LQ9D01 then showed alternating white columns from boot; flexing the board or running a swab along the upper flex-to-PCB joints changed the picture. Yoda: on a 180 with the same symptom the main interconnect cable was at fault, a known weak point of the 100 series. Community repair report.
- ↑ MacDat Capacitor Reference Library, "Capacitor Reference - PowerBook 180" (retrieved 2026-10-02). Logic board and screen all solid-state; inverter board one 47 µF 16 V low-profile radial electrolytic and one 33 µF 10 V purple solid polymer that rarely fails; trackball one 10 µF 16 V radial electrolytic. Secondary source.