Apple Lisa 2/5
 | |
| A Lisa 2 series machine. The 2/5 is a Lisa 2 with an external ProFile hard disk. | |
| Specifications | |
|---|---|
| Manufacturer | Apple Computer, Inc. |
| Type | Personal computer |
| Released | January 1984[1] |
| Intro price | US$3,495[1] |
| CPU | Motorola 68000 at 5 MHz[2] |
| Memory | 512 KB or 1 MB (one or two memory boards)[3] |
| Storage | One 3.5-inch micro disk drive, 400 KB; external 5 MB ProFile[4] |
| Display | 12-inch monochrome CRT, 720 × 364[4] |
| Sound | — |
| Ports / interface | Two serial (DB-25), one parallel (DB-25)[3] |
| Expansion | Three internal expansion slots[3] |
| Dimensions | 350 mm H × 475 mm W × 388 mm D (13.8 × 18.7 × 15.2 in)[4] |
| Weight | 22 kg (48 lb)[4] |
| OS / Firmware | Lisa Office System; MacWorks |
| Predecessor | Apple Lisa |
| Model no. | Apple part numbers: power supply 661-93108, motherboard 661-93106, I/O board 661-93198 |
The Apple Lisa 2/5 is the Apple Lisa 2 with an external ProFile hard disk. It was announced in January 1984 at US$3,495, alongside the Lisa 2/10 and the Macintosh. Like every Lisa 2 it has one Sony 3.5-inch drive in place of the original Lisa's two Twiggy drives.[1]
Apple's service manual defines the 2/5 as "a Lisa 2 with a 5 or 10 megabyte ProFile (external hard disk) connected to the built-in parallel port in back of the Lisa 2". Once a ProFile is connected, a Lisa 2 "becomes Lisa 2/5".[3]
Hardware
The Lisa 2/5 uses the Lisa 2 boards: power supply 661-93108 (the same part as the Lisa 1 US supply), motherboard 661-93106 and I/O board 661-93198. The Lisa 2/10 has its own power supply, motherboard and I/O board.[5]
| Feature | Lisa 1 | Lisa 2/5 | Lisa 2/10 |
|---|---|---|---|
| Floppy drives | Two 5.25-inch Twiggy | One 3.5-inch, 400 KB | One 3.5-inch, 400 KB |
| Hard disk | External ProFile | External ProFile | Internal 10 MB |
| Parallel port | External | External | Internal only |
| Power supply | 661-93108 (US), 661-93149 (European) | 661-93108 | 661-73172 |
| Motherboard | 661-93106 | 661-93106 | 661-93170 |
| I/O board | 661-93104 | 661-93198 | 661-93171 |
The Lisa 2 motherboard has three DB-25 connectors: two serial (Apple's "RS232 port A" and "port B") and one parallel.[3] The I/O board carries the battery pack and no resistor at R-47; its disk controller ROM is 341-0290 rev. B at location 1-A.[3] Apple's configuration table gives the Lisa 2 the "5 amp" power supply rated at 1.2 A AC input.[3]
With one memory board the machine has 512 KB and with two, 1 MB; two boards are needed to run the diagnostic diskette and the Lisa Workshop.[3]
ProFile and software
Up to six more ProFiles can be added on optional parallel interface cards, and software boots from the micro disk drive or a ProFile.[3] The Lisa Office System must be installed on the ProFile; Apple told technicians to upgrade every installation to version 3.1. Applications installed on the ProFile are serialised to one Lisa, so if the ProFile is moved to another Lisa the Office System starts but the applications will not open. The Office System and tools take about 2.5 MB of the ProFile. MacWorks can share the ProFile with the Office System, and on the Lisa 2/5 it supports only the built-in parallel port.[3]
Battery switch
Apple's set-up procedure: remove the back panel, find the set of four batteries on the lower right side of the I/O board, and make sure the switch next to them is set to ON (toward the left).[3] The pack is a 4.8 V NiCd that keeps the clock running when the Lisa is unplugged.[6] Remove the cells from a stored machine before powering it up; see Apple Lisa Capacitor Replacement Guide and Battery Explosion, Capacitor or Corrosion Damage.
Diagnostics
An unmodified Lisa 2/5 shows boot ROM code H and I/O ROM code A8 in the upper right corner of the screen after the start-up icons; with the Screen Modification Kit fitted it shows 3A and A8.[3] Error code 51, "Parallel port VIA", sends the technician to the I/O board first, then the CPU board and motherboard; codes 80-85 are ProFile errors.[3] The full start-up sequence and error table are on Apple Lisa 2 and Apple Lisa.
In Apple's video repair table, "power supply trips (turns off and on)" lists brightness and contrast adjustment before replacing the supply; "a sizzling noise coming from Lisa" lists replacing the supply first.[3]
Related pages
- Apple Lisa
- Apple Lisa 2
- Apple Lisa 2/10
- Macintosh XL
- Apple Lisa General Maintenance
- Apple Lisa Troubleshooting
- Apple Lisa Capacitor Replacement Guide
References
- ↑ 1.0 1.1 1.2 Hansen Hsu, "The Lisa: Apple's Most Influential Failure", Computer History Museum, January 19, 2023.
- ↑ Forrest Warthman and Associates for Apple Computer, LISA Hardware Manual, final draft, 7 September 1982, section 1.3, p. 1-6. Hosted as File:Lisa Hardware Manual Sep 1982.pdf.
- ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 Apple Computer, Apple Service Technical Procedures: Lisa/Macintosh XL (Lisa Level I Technical Procedures, #072-0085, pages revised to June 1987). Lisa 1.0 Set-up §C "Checking the Battery Switch" p. 2.6; Lisa 2 General Information pp. 2-3; Diagnostics p. 5.2.1; Lisa Troubleshooting Guide pp. 6.3-6.4 and 6.19; Lisa/Macintosh XL Troubleshooting pp. 6.5-6.6 and 6.16-6.18. Hosted as Apple Service Technical Procedures Lisa/Macintosh XL (PDF).
- ↑ 4.0 4.1 4.2 4.3 Cite error: Invalid
<ref>tag; no text was provided for refs namedog84 - ↑ 5.0 5.1 Apple Computer, Lisa Level 1 Technical Procedures, #072-0085, March 1985, Illustrated Parts Lists (Lisa 1.0, Lisa 2, Lisa 2/10). Hosted as Apple Lisa Level 1 Technical Procedures Mar85.
- ↑ Apple Computer, drawing 050-4008 rev. K, "Schematic, System I/O, Lisa", sheet 5. Hosted as File:Apple Lisa I-O Board Schematic 050-4008-K.pdf.