Philips FM-2, Service Manual

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Mechanical Description
8 Chapter 1 - General Information
Mechanical Description
As indicated in Figure 1, except for the battery, speaker, interface board, and rear
connector board, all functioning components of the monitor are installed as sub-
assemblies of the case front-cover assembly. There are four sockets (event marker,
Toco and two US) accessible on the left side panel. These are mounted on a side
connector PCB, which is itself mounted on the main PCB.
The case rear-cover assembly includes the replaceable battery and the speaker
assembly. The rear cover provides openings through which the three rear
connector board-mounted connectors (serial, parallel and power input) are
accessible. Additional mechanical features are included in
Chapter 6, “Disassembly/Reassembly Guide”.
LCD and Backlight
The LCD panel is a monochrome LCD display. It is a single-panel display with
a resolution of 320 X 240 pixels. Data to be displayed are stored in the main
board. Direct connection to the LCD panel is made through on-board header
assembly J7.
The backlight of the LCD is a Cold Cathode Fluorescent Lamp (CCFL)
mounted as part of the LCD panel. The AC high-voltage is turned on and off by
a digital control bit from the main-board-mounted drive.
Serial I/O Communications Port
The RS-232 interface is totally isolated from the interface board through the use
of high-speed optical isolators and isolated 5-volt power supply.
See Chapter 2, “System Interfaces” for serial connections, pinouts, cables and
supported modems.
Parallel I/O Communications Port
The parallel communications port is used to connect the monitor to the
Recorder or to a standard PCL Level 3 printer. At the time of printing, not all
PCL Level 3 printers are supported. For printers that have been validated for use