PowerBook 145
.jpg) | |
| PowerBook 145B with its adapter (joannapoe, Wikimedia Commons, CC BY-SA 2.0) | |
| Specifications | |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Type | Notebook computer |
| Released | 3 August 1992 (145); 7 June 1993 (145B) |
| Discontinued | 7 June 1993 (145); 18 July 1994 (145B) |
| Intro price | US$2,149 (145); US$1,649 (145B) |
| CPU | Motorola 68030 at 25 MHz, selectable 16 MHz power-saving mode; no FPU |
| Memory | 145: 2 MB soldered plus a 2 MB card; 145B: 4 MB soldered; 8 MB maximum |
| Storage | Internal 1.4 MB SuperDrive; 2.5-inch SCSI hard disk |
| Display | 10-inch backlit FSTN LCD, 640 × 400, monochrome |
| Sound | — |
| ROM | 1 MB |
| Power | 2.5 Ah NiCad main battery; 3 V rechargeable lithium backup cell |
| Dimensions | 2.25 × 11.25 × 9.3 in |
| Weight | 6.8 lb (3.1 kg) |
| OS / Firmware | System 7.0.1 (145) or 7.1 (145B) to 7.6.1 |
| Predecessor | PowerBook 140 |
| Successor | PowerBook 150 |
| Codename | Colt 45 (145); Pikes Peak (145B) |
The PowerBook 145 is a revision of the PowerBook 140 with a 25 MHz 68030 in place of the 140's 16 MHz part. Apple introduced it on 3 August 1992 and replaced it on 7 June 1993 with the PowerBook 145B, which has all 4 MB of its RAM soldered to the daughterboard. The 145B was discontinued on 18 July 1994, when the PowerBook 150 took its place.[1][2] Apple's developer note describes the 145 as identical to the 140 apart from its processor speed; both models are serviced from the same Service Source as the 140 and 170.[3][4]
Wikipedia gives the 145's code name as Colt 45 and the 145B's as Pikes Peak, and quotes list prices of US$2,149 and US$1,649.[5] Low End Mac gives US$2,150 for the 145 and US$1,300 for the 145B.[6][7]
Differences from the PowerBook 140
[edit | edit source]| Item | 140 | 145 | 145B |
|---|---|---|---|
| Processor | 68030, 16 MHz | 68030, 25 MHz; 16 MHz power-saving mode | 68030, 25 MHz; 16 MHz power-saving mode |
| Soldered RAM | 2 MB | 2 MB | 4 MB, on the daughterboard |
| As shipped | 2 MB | 4 MB with a 2 MB card | 4 MB, slot free |
| RAM cards | 2, 4, 6 MB | 2, 4, 6 MB | 2, 4 MB |
| Daughterboard | 661-0707 | 661-0788 | not listed |
| Displays fitted | Rev. A, Rev. B | Rev. A, B or C | Rev. C |
| Gestalt ID | 25 | 25 (System 7.0.1), 54 (7.1) | 54 |
Sources: Apple specification pages, developer notes and the Service Source.[1][2][3][8][4]
The documents disagree on where the 145's soldered 2 MB sits: its developer note says the main logic board, while the Service Source places the base RAM on the daughterboard.[3][4] Because the 145B already has 4 MB on board and the family can address only 8 MB, Apple warns that a 6 MB card in a 145B leaves part of the card unused.[8] Software cannot tell a 145B from a 145.[8]
The 145 and 145B take the PowerBook 140's main battery, and owners report that their Rev. C display is the same Sharp panel used in the PowerBook 160 and 165.[9][10]
Known faults
[edit | edit source]The 145 and 145B have the same faults as the 140: the capacitors on the LCD driver board and inverter, which MacDat lists for replacement, crumbling hinge mounts and brittle screw posts, a fragile interconnect cable, worn DC jacks, a dead NiCad pack and a flat backup cell.[11][12] One 145 that was completely dead had a failed diode, D16, behind the DC jack.[13] The procedures are on the PowerBook 140 pages:
- PowerBook 140 General Maintenance
- PowerBook 140 Troubleshooting
- PowerBook 140 Capacitor Replacement Guide
- PowerBook 140 Battery Replacement
Documentation
[edit | edit source]- PowerBook 140, 145, 145B and 170 Service Source: Apple's service manual, which covers both models.
- File:PowerBook 145 Developer Note (1992).pdf and File:PowerBook 145B Developer Note (1993).pdf: Apple's notes on what changed from the 140; see PowerBook 140 Documentation.
- Macintosh PowerBook 140 and 170 Developer Note: the hardware description these notes build on.
Related pages
[edit | edit source]References
[edit | edit source]- ↑ 1.0 1.1 Apple, "Macintosh PowerBook 145: Technical Specifications" (retrieved 2026-10-02). 68030 at 25 MHz, no FPU; logic board 2 MB, 2-8 MB, cards of 2, 4 and 6 MB; introduced 8/3/1992, discontinued 6/7/1993; Gestalt ID 54; 6.8 lb; original system 7.0.1; floppy inject manual.
- ↑ 2.0 2.1 Apple, "Macintosh PowerBook 145B: Technical Specifications" (retrieved 2026-10-02). Logic board 4 MB, 4-8 MB, cards of 2 and 4 MB; introduced 6/7/1993, discontinued 7/18/1994; Gestalt ID 54; original system 7.1; internal drive 80-120 MB.
- ↑ 3.0 3.1 3.2 Apple Computer, Macintosh PowerBook 145 Developer Note (1992), hosted here as File:PowerBook 145 Developer Note (1992).pdf. Introduction p. 1; Features p. 2 (25 MHz, selectable 16 MHz mode; 2 MB PSRAM soldered to the main logic board; 2, 4 or 6 MB cards, 8 MB maximum; external microphone provided; 2.5 Ah NiCad; 3 V lithium backup; 6.8 lb) and Table 1; Compatibility p. 3 (Gestalt value 25 under System 7.0.1 and 54 under 7.1; the 7.0.1 Battery desk accessory does not support the 16 MHz mode).
- ↑ 4.0 4.1 4.2 Apple Computer, PowerBook 140/145/145B/170 Service Source, hosted here as File:PowerBook 140, 145, 145B and 170 Service Source.pdf (see PowerBook 140, 145, 145B and 170 Service Source). Display compatibility matrix p. 4; Specifications pp. 15-16 (145/145B CPU 25 MHz; RAM 4 MB as 2 MB soldered and a 2 MB card; 145B 4 MB PSRAM on the daughterboard); Exploded View p. 166 (145 daughterboard 661-0788; 145B display EMI shield 922-0543).
- ↑ Wikipedia, "PowerBook 140", sections "PowerBook 145" and "PowerBook 145B" (retrieved 2026-10-02). Code names Colt 45 and Pikes Peak; list prices US$2,149 and US$1,649; the 145B shipped with a single bootable floppy of backup and restore utilities in place of a full set of system disks. History only.
- ↑ Low End Mac, "PowerBook 145" (retrieved 2026-10-02). Code name Colt 45; introduced 1992.08.03 at US$2,150, discontinued 1993.06.07; 40 or 80 MB hard drive. Secondary source.
- ↑ Low End Mac, "PowerBook 145b" (retrieved 2026-10-02). Code name Pike's Peak; introduced 1993.06.07 at $1,300, discontinued 1994.07.18; 80 or 120 MB hard drive; M5651 power supply, 19 W, 2 A. Secondary source.
- ↑ 8.0 8.1 8.2 Apple Computer, Macintosh PowerBook 145B developer note (1993), hosted here as File:PowerBook 145B Developer Note (1993).pdf. Pages 1-3: identical to the 145 except that all 4 MB of PSRAM is soldered to the daughterboard, freeing the expansion slot; 2 MB or 4 MB cards, 8 MB total, a 6 MB card wastes RAM; 40 MB and 80 MB disks offered; optional external microphone; does not support the PowerBook Express Modem; identifies itself as a 145 to Gestalt.
- ↑ Low End Mac, "PowerBook 140" (retrieved 2026-10-02). The same NiCad battery is used on all PowerBook models from the 140 to the 180. Secondary source.
- ↑ 68kMLA forum thread "PowerBook 140, 145, 145B, 160, 165 LCD Displays", February 2022 to April 2024. Shaddam IV: 145, 145B (both Rev. C), 160 and 165 screens are all the same; croissantking: a 145 panel worked in his 165 in 4-bit greyscale. Community experience.
- ↑ MacDat, "Capacitor Reference - PowerBook 145/145B" (retrieved 2026-10-02). No electrolytics on the logic board; LCD 100 µF 6 V, 22 µF 35 V, 3.3 µF 35 V ×9; inverter 47 µF 16 V and 33 µF 10 V polymer; trackball 10 µF 16 V. Secondary source.
- ↑ 68kMLA forum thread "Powerbook 145 & brittle ABS", August 2016. Screw posts in a 145 broke on opening. Community experience.
- ↑ 68kMLA forum thread "PowerBook 145 shuts down during startup", October-November 2023. frankc64: failed reverse-polarity diode D16 behind the barrel connector; flat VL2320 backup cell; shut-downs with the hard disk connected. Community repair report.