Macintosh Portrait Display Service Source
The Macintosh Portrait Display volume of Apple's Service Source is Apple's 108-page module-level service manual for the Macintosh Portrait Display, Apple's 15-inch monochrome portrait monitor. The PDF was created on 5 December 1995 for the Service Source CD. Chapters are numbered from page 1 each.
Apple made domestic and international versions of the Portrait Display, and their troubleshooting and repair procedures differ. This manual covers the domestic version only; Apple refers the international "Series B" to a separate manual (Basics p. 1).
Contents
edit| Chapter | Sections (chapter page) | PDF pages |
|---|---|---|
| Basics | International "Series B" (1), Monitor Distortion (2-5) | 3-7 |
| Specifications | Characteristics (1-2), Controls and Ports (3), Physical and Electrical (4), Operating Environment (5) | 9-13 |
| Troubleshooting | General (1); Symptom Charts: No Raster (2-3), Geometry (4-6), Video Display (7), Synchronization (8), Miscellaneous (9) | 15-23 |
| Take Apart | Rear Cover (1-2), EMI Shield (3-5), AC Input Assembly (6-8), Fuse (9-10), Signal Input Assembly (11-13), Fan (14-16), Video Board (17-21), Contrast Brightness Board (22-23), CRT Board (24-30), Power/Sweep Board (31-35), Bezel (36-38), LED Cable Assembly (39-42), CRT (43-46) | 25-70 |
| Adjustments | Monitor Safety (2), Light Meter Setup (3-8), Geometry (9-17), Video With Screen Control (18-26), Video Without Screen Control (27-36) | 72-106 |
| Exploded View | one drawing with part numbers | 108 |
What it settles
edit- Specifications: 15-inch screen, P4 (white) phosphor; 640 × 870 pixels at 80 dpi; 75 Hz vertical, 68.85 kHz horizontal, 52 MHz dot clock; active area 8 × 10.87 in (203 × 276 mm); universal supply 90-270 V AC, 47-63 Hz, 75 W maximum; 16 kg (Specifications pp. 1-4).
- Monitor Distortion (Basics pp. 2-5): Apple's list of environmental distortions (metal furniture, fluorescent lights, other monitors and appliances) to rule out before adjusting or repairing a distorted raster.
- Symptom charts, including the order for no raster with the LED off: video cable, power cord, internal power connections, fuse, power/sweep board, video board (Troubleshooting p. 2).
- Geometry targets (Adjustments pp. 9-17): raster width 8 in ± 1/8 in (203 ± 2 mm), height 10 7/8 in ± 1/8 in (276 ± 2 mm), side margins about 1/4 in (7-8 mm).
- Video Without Screen Control (p. 31): with shielded clip leads on TP1 and TP2 of the CRT board, set the BIAS control for 55 V DC ± 1.0 V. Apple asks for the monitor to be switched off before connecting or removing the clips.
- Light Meter Setup (pp. 3-8) covers the R77 (Apple part 076-0310), L-248 and 246 light meters.
- Exploded-view part numbers: power/sweep board 661-0117; video board 661-0118; CRT video board 661-0119; CRT assembly 076-0350; fuse 941-0017; fan 983-0014; AC input assembly 937-0019; signal input assembly 937-0022; contrast/brightness board 982-0004.
What this manual does not contain
edit- No schematics, no component-level parts list and no component values.
- The international "Series B" display.
- No anode (EHT) voltage figure; the only test-point voltage is the 55 V bias setting.
- Two separate video procedures, "With Screen Control" and "Without Screen Control"; Apple directs the technician to the second if the monitor has no screen control, so check which one applies before starting.
Pages that cite this document
editThe Portrait Display contains a CRT and a live power/sweep board. Apple's adjustments are made from the rear with a mirror to view the screen. Follow CRT Discharge Procedure before working inside one.
Download: Portrait_display.pdf (1011 KB)