Grounding Requirements; Options; Accessories Supplied; Recommended Test Equipment - HP 7475A Service Manual

Model 7475A
7475-A-2-1
LINE VOLTAGE AND
FUSE RATING LABEL
REMOVE
THREE
SCREWS
Figure 1-2. Top Case Removal
LINE
FUSE
1-23. GROUNDING REQUIREMENTS
1-24. To protect operating personnel, the plotter must
be properly grounded. The plotter is supplied with a
three-conductor power cable which, when connected to
an appropriate power outlet, grounds the plotter. To
preserve this protection feature, do not operate the plot-
ter from a power outlet which has no grounded connection.
Section I
1-25. OPTIONS
1-26. The Model 7475A is available with one of two
types of interface, designated as the following options:
Option 001
Option 002
RS-232-C/CCITI' V.24
Hewlett-Packard Interface Bus
1-27. Option 016 provides a special "eavesdrop" cable
for Option 001.
1-28. The line voltage selection ordered is designated
as one of the following:
OptionOIO
Option012
Option 022
Option024
lOOVac
120Vac
220Vac
240Vac
1-29. ACCESSORIES SUPPLIED
1-30. The items listed in Table 1-4 are supplied with
each plotter.
1-31. RECOMMENDED TEST EQUIPMENT
1-32. Equipment required to maintain the Model 7475A
is listed in Table 1-5.
Table 1-2. Line Voltage Selection
NOMINAL
LINE
VOLTAGE PINI
IOOV
8
120V 8
220V
8
240V
8
*Wire identification is by color code:
8=GRAY
928 =WHITE/RED/GRAY
958= WHITE/GREEN/GRAY
LINE
VOLTAGE
100/120
v
*220/240 V (0.25 X 1.25 in.)
(5X 20 mm)
TRANSFORMER PRIMARY CONNECTIONS*
PIN2 PIN3 PIN4 PIN5 PIN6 PIN7
928
958 8
958 NC 928
NC 928 8 928 958 958
958 NC 958 928 8 928
NC 958 958 928 8 928
Table 1-3. Line Fuses
FUSE FUSE FUSEHOLDER CAP
RATING HP PART NUMBER HP PART NUMBER
0.6AT 2110-0016 2110-0565
0.3AT 2110-0044 2110-0565
0.315AT
2110-0639
2110-0567
*Either Part No. 2110-0044 or 2110-0449 will provide adequate protection. Part No. 2110-0044 is a standard U.S. fuse for
240
V
line; Part No. 2110-0449 is a standard European fuse for 220 V line.
1-3