Service manual

Ultraview 1030/1050 Monitors — Service Manual
3-23
Theory
ICB (Interconnect PCBA)
The interconnect PCBA connects the CPU PCBA to various other parts of the monitor. It bridges
the CPU PCBA to the I/O bay PCBA, it connects the module to the CPU PCBA, and it connects the
recorder and recorder CPU PCBA to the CPU PCBA. The PCBA contains only connectors and
passive electronic components.
Display
The flat panel display is a 640 × 480, active matrix, thin-film-transistor color display from Sharp. It
receives 18 data signals, 4 timing signals, +5 V, GND, and about 1000 VAC backlight voltage from
the CPU PCBA. The clock is approximately 25 MHz, and the vertical refresh rate is about 60 Hz. In
the 1030 product, the display is driven with data for only a few colors.
The pinout of the display connector (at the display) is given in Table 2. The backlight is connected
via a separate 3-pin connector.
Table 2: Display Connector Pinouts
Pin # Symbol Description
1GND
2CLK
3 HSYNC Horizontal Sync
4 VSYNC Vertical Sync
5GND
6R0Red Data LSB
7R1
8R2
9R3
10 R4
11 R5 Red Data MSB
12 GND
13 G0 Green Data LSB
14 G1
15 G2
16 G3
17 G4
18 G5 Green Data MSB
19 GND
20 B0 Blue Data LSB