TABLE 7-1. 7035B TROUBLESHOOTING INDEX (Continued)
PROBLEM
POSSIBLE CAUSE
CURE
4.
(cont)
d.
X-axis slider rod bearings too
d.
Adjust slide rod bearings
tight.
(paragraph 5-85).
e.
Insufficient backlash in gears
e.
Adjust backlash (paragraph 5-83).
(too tight).
f.
Motor brushes excessively worn.
f.
Replace brushes (paragraph 5-38).
g.
Pen speed too fast. Retrace
g.
Decrease retrace pen
error should be small only at pen
speed.
speeds below 1 inch/sec.
h.
Bearing in drive train faulty.
h.
Replace bearing (paragraph 5-87).
i.
Faulty neon bulb in photochopper.
i.
Replace faulty bulb (aging not required).
j.
Excessive differential noise on
j.
See Table 1-1.
input signal.
k.
Grease on drive belt.
k.
Clean
5.
Excessive hysteresis in
a.
Source impedance too high or low
a.
Adjust R-114 (paragraph 5-97).
45 retrace (X and Y steep
(1 my/inch range only) causing
This control will adjust the phasing
angle retrace O. K.).
excessive phase shift in input
nominal source impedance. Extremes
filter.
can be compensated for only by
reducing the pen speed, thereby
reducing the phase shift.
b.
Operating on ranges other than
b.
Possible cures:
calibrated positions.
1.
Adjust R-114.
2.
Reduce pen speed.
c.
Phase relationship problem in
c.
Examine signal source.
signal source.
d.
Phase adjustment (R-114) mis -
d.
Adjust R-114 per paragraph 5-97.
adjusted.
e.
Pen carriage wheels too loose.
e.
Adjust pen carriage wheels
(paragraph 5-71).
6.
Calibration incorrect.
a.
Calibration controls (front panel
a.
Calibrate unit per paragraph 5-95.
screw driver adj) incorrectly
adjusted.
b.
Recording paper inaccurate due to
b.
Calibrate unit per paragraph 5-95.
poor printing or environmental
effects.
7.
High voltage ranges won't
Leakage on surface of printed
Wash board per paragraph 5-9.
hold calibration.
circuit board.
8.
X-axis arm seems to
a.
Upper support screws (two) not
a.
Align arm and tighten (see
wobble - not rigidly held.
tight (see figure 5-6).
paragraph 5-73).
(Slight vertical wobble at
zero end of arm is
b.
X-axis slider rod bearings too
b.
Adjust slider rod bearing
normal.)
loose.
(paragraph 5-85).
7-3
Содержание HP-7035B
Страница 1: ...TECHNICAL MANUAL HEWLETT PACKARD MODEL HP 7035B ...
Страница 9: ...FIGURE 1 4 DIMENSION DRAWING FIGURE 1 5 ACCESSORIES 1 3 ...
Страница 12: ...FIGURE 1 7 TYPICAL FREQUENCY RESPONSE INPUT FILTER FIGURE 1 8 TYPICAL DYNAMIC RESPONSE 1 6 ...
Страница 14: ...FIGURE 2 1 WING BRACKET INSTALLATION FIGURE 2 2 STACKED CONFIGURATION 2 2 ...
Страница 16: ...FIGURE 3 1 FRONT PANEL CONTROLS 7035B AND 7035B 001 MODELS 3 2 ...
Страница 20: ...FIGURE 4 1 BLOCK DIAGRAM FIGURE 4 2 DETAILED BLOCK DIAGRAM 4 2 ...
Страница 48: ...TM 11 6625 2850 14 P FIGURE 6 1 EXPLODED VIEW CABINET 6 9 ...
Страница 49: ...TM 11 6625 2850 14 P FIGURE 6 2 EXPLODED VIEW CARRIAGE ARM SHEET 1 OF 2 6 10 ...
Страница 58: ...FIGURE 7 1 COMPONENT IDENTIFICATION FRAME 7 8 ...
Страница 59: ...TM 11 6625 2850 14 P Figure 7 2 Component Identification Circuit Board 7 9 ...
Страница 60: ...TM 11 6625 2850 14 P Figure 7 3 Schematic Model 7035B D 07035 92550 7 10 ...
Страница 62: ...TM 11 6625 2850 14 P FIGURE 8 1 COMPONENT IDENTIFICATION CIRCUIT BOARD 8 2 ...
Страница 66: ...TM 11 6625 2850 14 P FIGURE 8 5 EXPLODED VIEW CARRIAGE ARM 8 6 ...