Owner's manual

Photometric Analyzer Maintenance 4
Part I: 4-3
4.3 Major Internal Components
The major components in the Control Unit are shown in Figure 4-3.
Figure 4-3: Control Unit Major Internal Components
WARNING: HAZARDOUS VOLTAGES EXIST ON CERTAIN
COMPONENTS INTERNALLY WHICH MAY PERSIST
FOR A TIME EVEN AFTER THE POWER IS TURNED
OFF AND DISCONNECTED.
The 6000A Control Units contain the following major components:
• Power Supply
• Motherboard (with Microprocessor, RS-232 chip, and
Preamplifier PCB)
• Front Panel Display Board and Displays—
5 digit LED meter
2 line, 20 character, alphanumeric, VFD display
See the drawings in the Drawings section in back of this manual
for details.
The Front Panel Display Board is accessed by unlatching and swinging
open the front panel, as described earlier. Other electronic components are
accessed by removing four rear panel screws and sliding out the entire
chassis. See Figure 4-4, below.