C3
TM 9-4935-481-14-1
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
STEP
UNIT
PROCEDURE
CORRECTIVE ACTION
67
PPE
SEQUENCE switch to ALIGN 1.
calculated difference to 0.500. If above, subtract the difference from 0.500. Repeat step 79
inserting the calculated number in place of 0.5000. Readjust the DC LEVEL control to this
68
Remove the probe from 1A4A2-J5 and connect it to 1A5A1-J9.
new negative value.
69
Adjust 1A5A1-R15 fully ccw.
86
TTS
OSC
Adjust 1A6A2-R28 until the display just switches from HI to LO.
70
Adjust 1A5A1-R15 cw until the display just switches from LO to HI.
87
OSC
CIP
RUN/HOLD/OFF switch to OFF.
71
SEQUENCE switch to ALIGN 2.
88
PPE
PPE
Wait 5 sec. then momentarily actuate TEST START switch (power off).
72
Adjust 1A5A1-R11 fully ccw.
TTS
Horizontal Error Voltage Thresholds (1A6)
73
Adjust 1A5A1-R11 cw, until the display just switches from LO to HI.
OSC
89
COUNTER INHIBIT(SEC) dial to 12.00.
CIP
74
Remove the probe from 1A5A1-J9 and connect it to 1A6A2-J6.
MCP
90
RUN/HOLD/OFF switch to RUN.
CIP
75
SELECTOR A switch to F3.
MCP
91
SEQUENCE switch to ALIGN 3.
PPE
76
DMM LO switch to SYS GND.
PPE
92
Momentarily actuate TEST START switch (power on).
PPE
77
SEQUENCE switch to MNL.
PPE
93
Remove the probe frobe from 1A6A2-J6 and connect it to 1A6A2-J5.
TTS
78
Momentarily actuate TEST START switch twice (power on).
HWS
94
Observe INHIB lamp illuminated.
CIP
DMM
95
Adjust 1A6A2-R4 fully cw.
TTS
79
Adjust DC LEVEL control to -0.5000 0.0001 Vdc.
TTS
Adjust 1A6A2-R4 ccw until the display just switches from LO to HI.
OSC
80
Adjust 1A6A2-R28 fully ccw.
OSC
96
SEQUENCE switch to ALIGN 4.
PPE
81
Adjust 1A6A2-R28 cw until the display just switches from HI to LO.
HWS
97
Adjust 1A6A2-R2 fully cw.
TTS
82
Adjust DC LEVEL control to @ +0.5000 Vdc.
DMM
98
HWS
Adjust 1A6A2-R2 ccw until the display just switches from LO to HI.
OSC
99
Momentarily actuate TEST START switch (power off).
PPE
83
Slowly adjust the DC LEVEL control to determine where the display just switches from HI to LO.
OSC
100
Horizontal Error Voltage Thresholds (1A6)
84
Record the reading for use in step 85.
DMM
NOTE
85
Determine the difference between the numerical value recorded in step 84 above and 0.500.
HWS
Divide this difference by 2. If the numerical value recorded in step 84 was lower than 0.500,
Perform steps 101 through 118 without interruption.
DMM
add the
3-209