Editing Apple Composite Monitor

{{Infobox computer peripheral
| name         = AppleColor Composite Monitor
| image        = [[File:AppleColor Composite Monitor IIe.png|260px|frameless]]
| caption      = AppleColor Composite Monitor IIe (platinum)
| manufacturer = Apple Computer (two outside vendors, Series "S" and Series "H")
| type         = 14-inch composite colour monitor
| model        = A2M6021 (AppleColor Composite Monitor IIe); A2M6020 (AppleColor Composite Monitor)
| interface    = Composite video, RCA phono jack
| compatible   = [[Apple II]], [[Apple II Plus]], [[Apple IIe]], [[Apple IIc]]
| power        = 108-132 V AC, 50-60 Hz; 50 W typical, 75 W maximum
}}
The '''AppleColor Composite Monitor''' is Apple's 14-inch composite colour monitor for the [[Apple II]] family. It was first sold as the ColorMonitor IIe (beige) and ColorMonitor IIc (white), and was renamed the AppleColor Composite Monitor IIe and IIc when the cases changed to platinum.<ref name="tp-basics">Apple Computer, ''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', in ''Apple Service Technical Procedures: Apple II Family, Volume Two'', 072-0229, November 1991 build, Basics, pp. 1.2-1.5 (PDF pp. 16-19). Hosted here: [[:File:AppleColor Composite Monitor and ColorMonitor IIe and IIc Technical Procedures.pdf]].</ref> Apple's July 1987 data sheet lists the AppleColor Composite Monitor IIe (order number A2M6021) for the Apple II, II Plus and IIe, and the AppleColor Composite Monitor (A2M6020).<ref name="ds">Apple Computer, ''AppleColor Composite Monitors'' data sheet, July 1987, A2F2220. Hosted here: [[:File:AppleColor Composite Monitors Data Sheet 1987.pdf]].</ref> The monitor takes a composite signal through a phono jack.<ref name="tp-basics" />

The monitor has a colour CRT, and the Series "H" Rev. B chassis is live to the mains neutral (see [[#Two designs]]). Read [[CRT Discharge Procedure]] before opening it.

== Two designs ==
Two vendors built the original ColorMonitors to their own internal designs, which Apple calls Series "S" and Series "H". Each made both the IIe case (beige) and the IIc case (white). The series can be told apart from outside: Series "S" has two plastic hinges with metal pins on the control door under the screen, Series "H" three all-plastic hinges that bend along a crease. With the change to platinum, production was split: the AppleColor Composite Monitor IIc is Series "S" only and the AppleColor Composite Monitor IIe is Series "H" only. Apart from case colour, each composite model is identical to the matching ColorMonitor series.<ref name="tp-basics" /><ref name="tp-note">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', note p. 0.0 (PDF p. 3).</ref>

{| class="wikitable styled-table" style="width:70%;"
|+'''Series "H" main logic board revisions (Technical Procedures p. 1.5)'''
! Rev. A !! Rev. B
|-
| Rear panel, power cord and AC assembly is one module, soldered to the logic board || Power cord assembly detaches from the logic board (two modules)
|-
| Separate power supply board || Power supply on the logic board
|-
| Separate video board || Video on the logic board
|-
| Isolation transformer in the mains circuit || No isolation transformer
|}

Apple calls the Rev. B design "AC/DC transformerless": the chassis is connected to the mains neutral, so if the plug is inserted backwards or the outlet is wired backwards the chassis carries a lethal current. Apple's instructions are to use only a properly earthed three-pin outlet, never an adapter plug, and to run the monitor from an isolation transformer when working on it. A Rev. B monitor or service board is recognised by having no separate power supply board.<ref name="tp-adj-w">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Adjustments, warning, p. 4.1 (PDF p. 121).</ref>

== Specifications ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:70%;"
|+'''AppleColor Composite Monitors (data sheet, July 1987)'''<ref name="ds" />
! Item !! Value
|-
| Screen || 14-inch class; data sheet gives 13 in (33 cm) diagonal; 0.52 mm dot pitch, slot pattern
|-
| Input || Composite, 1.0 V ±0.1 V p-p, negative sync, internal 75 Ω termination; RCA phono jack
|-
| Resolution || Up to 640 × 200 with the Apple II, II Plus, IIe or IIc
|-
| Video bandwidth || 3 MHz in colour mode, 8 MHz in black-and-white mode
|-
| Scan rates || 15.7 kHz horizontal, 60 Hz vertical
|-
| Controls || Front: brightness, contrast, colour intensity, tint, high-resolution text switch (WHITE ONLY), power. Rear: horizontal hold, vertical hold, vertical size
|-
| Mains || 108-132 V AC, 50-60 Hz
|-
| Power || 50 W typical, 75 W maximum
|-
| Operating temperature || 5-30 °C
|-
| Weight || 27.5 lb (12.5 kg)
|}

The WHITE ONLY switch, called the high-resolution text switch on the data sheet, shows everything in white; Apple's chart checks it first when a monitor shows no colour. On the IIc version the power switch is on the top right side of the case; on the IIe version it is at the front, lower right. The frequently used controls sit behind a door under the screen and the rest are on the back.<ref name="tp-basics" /><ref name="tp-text">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Adjustments, Text Adjustments, p. 4.5 (PDF p. 125).</ref>

== Hardware ==
{| class="wikitable styled-table" style="width:100%;"
|+'''Service modules by series (Illustrated Parts List pp. 5.3-5.9)'''<ref name="ipl">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Illustrated Parts List, pp. 5.3-5.11 (PDF pp. 137-145).</ref>
! Part !! Series "S" !! Series "H"
|-
| Main logic board || 661-0308 || 661-0317
|-
| CRT assembly || 076-0173 || 076-0194
|-
| Power supply || PS/panel/AC cord assembly: 970-1278 (IIe, 110 V), 970-1279 (ColorMonitor IIc, 110 V), 970-1305 (Composite IIc, 110 V) || On the logic board (Rev. B)
|-
| Mains fuse || F871 on the power supply board, 3 A 250 V slow-blow 3AG (740-0102) || F901 on the logic board, 4 A 125 V medium time-lag (740-0401); F902 1 A fast-blow (740-0304)
|-
| Other || Control PCB 970-1277, WHITE ONLY switch 937-0005, on/off switch 937-0006 || Switch bracket 948-0016, LED assembly 930-0003
|}

Both use the smoke-coloured video cable 590-0539.<ref name="ipl" />

Series "H" monitors were built with a 3.15 A 250 V fuse at F901. Apple found a one per cent failure rate and ordered every 3.15 A fuse replaced with a 4 A 125 V fuse when it failed or whenever the monitor came in for any repair, with new labels inside the case and on the board.<ref name="tp-f901">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Service Notes, Upgrade Procedure for Fuse F901, pp. 0.5-0.7 (PDF pp. 9-11).</ref> The Rev. B logic board also reverses the polarity of the LED circuit, so a Rev. A monitor fitted with a Rev. B board shows a dead power light until the two LED leads are swapped in their connector.<ref name="tp-led">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Service Notes, LED Polarity Reversal Procedure, Series "H", p. 0.9 (PDF p. 13).</ref>

Apple presets the yoke and forbids tilt, ring or geometry adjustment. Inside, the Series "S" monitor has bias, drive and sub-brightness controls behind the power supply board and a service switch (SW800); the Series "H" has background and drive controls on the CRT socket board and no service switch.<ref name="tp-col">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Adjustments, pp. 4.3 and 4.7-4.14 (PDF pp. 123, 127-134).</ref>

== Known faults ==
Apple's symptom chart works at module level. The cheap fixes in it: a missing raster can be the external brightness control or the mains fuse (F871 on Series "S", F901 on Series "H"); a single horizontal line on a Series "S" can be the internal service switch SW800 left out of its normal position; no colour can be the WHITE ONLY switch left in; and flashing or a wavy picture is cured by gently crimping the metal tabs of the video connector.<ref name="tp-ts">''AppleColor Composite Monitor IIe/IIc and ColorMonitor IIe/IIc Technical Procedures'', Troubleshooting, pp. 2.3-2.5 (PDF pp. 23-25).</ref> See [[Apple Composite Monitor Troubleshooting Guide]].

Apple's service documents give no schematic or component values for either series.

== Documentation ==
Apple's Technical Procedures, the owner's guide and the 1987 data sheet are hosted and described on [[Apple Composite Monitor Documentation]].

== Related pages ==
* [[Apple Composite Monitor General Maintenance]]
* [[Apple Composite Monitor Troubleshooting Guide]]
* [[Apple Composite Monitor Documentation]]
* [[Apple Color RGB Monitor]], the analogue RGB monitor for the Apple IIGS
* [[Apple Monitor II]], [[Apple Monitor IIc]]
* [[CRT Discharge Procedure]]

== References ==
<references />

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[[Category:Apple Vintage Accessories]]