Editing Apple Monitor IIc

{{Infobox computer peripheral
| name         = Apple Monitor IIc
| image        = [[File:Apple Monitor IIc on stand.jpg|260px|frameless]]
| caption      = Monitor IIc on its tilt stand
| manufacturer = Apple Computer
| type         = 9-inch monochrome composite video monitor
| model        = A2M4090
| interface    = Composite video, from the Apple IIc video port
| compatible   = [[Apple IIc]]
}}
The '''Apple Monitor IIc''' (A2M4090) is the small monochrome monitor Apple sold with the [[Apple IIc]]. It has a 9-inch screen and was introduced in 1984 in the same off-white Snow White styling as the computer.<ref name="wp">{{cite web |url=https://en.wikipedia.org/wiki/Apple_displays |title=Apple displays |publisher=Wikipedia |access-date=2026-10-02}} Used for the screen size, the 1984 introduction and the styling.</ref> Its user's manual carries a 1984 copyright and part number 030-0941-A.<ref name="ug">Apple Computer, ''Monitor IIc User's Manual'', 1984, 030-0941-A. Hosted here: [[:File:Apple Monitor IIc User's Guide 1984.pdf]].</ref> Sams's ComputerFacts cover the monitor, as model A2M4090, in the same set as the IIc itself (A2S4000).<ref name="sams">Howard W. Sams & Co., ''ComputerFacts'' CSCS7, ''Apple Model IIc'' (A2S4000, A2M4090), 1985. Hosted here: [[:File:Sams ComputerFacts CSCS7 Apple IIc A2S4000 and Monitor IIc A2M4090.pdf]].</ref>

The monitor contains a CRT. Read [[CRT Discharge Procedure]] before opening it.

== Setting up ==
Apple's manual puts the monitor either on the optional IIc tilt stand or on a desk or sturdy shelf next to the computer, and says not to put it on top of the computer without the stand, nor in direct sunlight or near heat. The video cable supplied with the monitor runs from the IIc's video port to the monitor, and the mains lead must go to an earthed outlet.<ref name="ug" />

The power button and the contrast control are on the sides of the cabinet; the power button has an indicator light. Vertical hold, vertical size and brightness are on the back. To set the picture, turn contrast fully up, turn brightness up until the background lines show and back until they just disappear, then set contrast for comfortable text.<ref name="ug" />

== Care ==
The manual's rules are short: no drinks on the monitor, keep the vents clear, unplug the video and power cables before moving it, and lift it by the hand recess built into the case. Clean the cabinet with a damp lint-free cloth without letting water into the vents, and avoid aerosol sprays and solvents, which damage the finish. Wipe the etched, non-glare screen with a dry lint-free cloth and keep fingers off it, because skin oil makes dust stick.<ref name="ug" />

== Service ==
Apple serviced the Monitor IIc only by exchange. Its Technical Procedures for the monitor contain a serial number transfer procedure and an illustrated parts list and nothing else: the dealer wrote the customer's serial number on a transparent label over the label of a service-stock monitor, gave the customer that monitor and returned the faulty one to Apple. The customer kept their own power and video cables.<ref name="tp">Apple Computer, ''Apple Monitor IIc Technical Procedures'', Section 1, Serial Number Transfer (rev. July 1985 and February 1986), and Section 2, Illustrated Parts List (April 1985), in ''Apple Service Technical Procedures, Volume Four'', 072-0062, June 1987. [https://archive.org/details/apple-service-technical-procedures-volume-four archive.org scan].</ref>

Sams's service data give the parts most likely to be needed. The list in the IIc set's preliminary service checks names rectifier diodes D701-D704 (G2GD1), fuses F701 (1.5 A 250 V) and F771 (750 mA 250 V), the horizontal output transistor Q18 (BU406) and the DC voltage regulator transistor Q701 (BD534L).<ref name="sams-psc">Howard W. Sams & Co., ''ComputerFacts'' CSCS7, Preliminary Service Checks, Replacement Parts and Description, monitor section (PDF p. 40).</ref> The monitor's schematic, resistance measurements and board photographs are in the same set.<ref name="sams" />

== Documentation ==
The user's manual and Sams's ComputerFacts are hosted and described on [[Apple Monitor IIc Documentation]].

== Gallery ==
<gallery mode="packed" heights="200">
File:Apple IIc with monitor.jpg|Apple IIc with the Monitor IIc on its stand
</gallery>

== Related pages ==
* [[Apple Monitor IIc Documentation]]
* [[Apple IIc]]
* [[Apple Monitor II]], the 12-inch green-screen monitor for the Apple II and IIe
* [[Apple Monochrome Monitor]], the later 12-inch white-phosphor monitor for the IIc and IIGS
* [[Apple Composite Monitor]], the composite colour monitors for the IIe and IIc
* [[CRT Discharge Procedure]]

== References ==
<references />

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