Diagrams and Circuit Board Illustrations
DS902 A14-4 5L A14 2A R901A A14-4 3L A14 1E
DS904 A14-4 6L A14 2E R930 A14-4 1A A14 6A
A14 Front
Panel board
1235 67
A
B
C
D
CR921
S916
CR916
S914
CR914
R922 R930
56
Figure 9Ć3: A14 Front Panel board.
4
1. Locate the circuit board illustration.
H Identify the circuit board and its assembly numĆ
ber that the part is located on by using the cirĆ
cuit board location illustration. Example: A14.
H In the manual, locate the page whose title
corresponds with the assembly number of the
circuit board.
2. Locate the component on the circuit board.
H Using the circuit number and grid coordinates,
find the part on the circuit board illustration.
H In the circuit board location illustration,
determine the location of the circuit board in
the instrument.
H Find the circuit board in the instrument
and use the circuit board illustration in
the manual to help find the part on the board.
1. Determine the circuit board illustration
and component location.
H From the schematic diagram, determine
the assembly number of the circuit board
on which the part is mounted. Example:
A14 FRONT PANEL BOARD.
H Scan the component location table for that
schematic and assembly number, and find
the number of the part.
H Under the BOARD LOCATION column,
read the grid coordinates for the part.
3. Locate the component on the schematic diagram.
H Locate the page whose number corresponds
with the schematic diagram number just found
in the component location table.
H Scan the component location table for that
circuit board and assembly, and find the circuit
number of the part.
H Under the SCHEM LOCATION column, read
the grid coordinates for the part.
H Using the circuit number and grid coordinates,
locate the part on the schematic diagram.
2. Determine the circuit number.
H Compare the circuit board with its illustration
and locate the part by area and shape on the
illustration. Example: R930.
H Scan the component location table for
the circuit board illustration, and find the
circuit number of the part.
H Determine the schematic diagram number in
which the part is located. Example: A14 diaĆ
gram 4.
2
34
A
B
C
D
56
3
FRONT PANEL A14
3
1
A
FROM
R930
150
3
CIRCUIT BOARD TO
SCHEMATIC DIAGRAM
SCHEMATIC DIAGRAM
TO CIRCUIT BOARD
LOCATING COMPONENTS ON THE CIRCUIT BOARD OR SCHEMATIC DIAGRAM
Component Number
A23 A2 R1234
ChassisĆmounted components have no Assembly Number
prefixĊsee end of Replaceable Electrical Parts List.
COMPONENT NUMBER EXAMPLE
Assembly
Number
Subassembly
Number (if used)
Circuit
Number
STATIC
SENSITIVE
DEVICES
CIRCUIT
NUMBER
SCHEM
NUMBER
SCHEM
LOCATION
CIRCUIT
BOARD
BOARD
LOCATION
CIRCUIT
NUMBER
SCHEM
NUMBER
SCHEM
LOCATION
CIRCUIT
BOARD
BOARD
LOCATION
DS903 A14-4 6L A14 2E R901B A14-4 3L A14 1E
A14 FRONT PANEL BOARD
Figure 9Ć4:ăLocating Components on Circuit Board or Schematic Diagram
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