17
Subject to change without notice
1) RV1001: Adjustment of +146 Volt supply
2) +175 Volt check
3) RV1003: Adjustment of +12 Volt supply
4) -6 Volt accuracy check
6) R6013: CRT minimum intensity
10) P2007: Y-Gain CH I at 5 mV/div
17) P2011: Y-Gain CH II at 5 mV/div
28) CV4001: 0.1 μs/div time base adjustment
29) RV4004: 50 μs/div time base adjustment
30) RV4003: 50 ms/div time base adjustment
34) RV4001: Trigger-Symmetry
40) VR7003: Trace Rotation Check
CC Board
1 Before removing the CC board, check that the power cable
is not connected to the oscilloscope.
2 Press connector “A” on XY board and pull the ribbon cable
(out).
3 Remove the 2 screws marked “B” and carefully pull the CC
board (out).
4 Replace the CC board and follow the previous instructions
in reverse order.
5 Connect power cable to the oscilloscope and switch it on.
6 Please follow the instructions of the Adjustment Procedure
HM303-6 in the following order (item):
1) RV1001: Adjustment of +146 Volt supply
2) +175 Volt check
3) RV1003: Adjustment of +12 Volt supply
4) -6 Volt accuracy check
40) VR7003: Trace Rotation check
41) RV4501: Component-Tester trace inclination
42) RV4502: Calibrator Output
YP Board
1 Before removing the YP board, check that the power cable
is not connected to the oscilloscope.
2 Press connector “A” and pull the ribbon cable (out).
3 Press connector “B” and pull the ribbon cable (out).
4 Remove the glue (transport protection) from the connector “C”,
use a screwdriver as a lever and position it in the gap to press
the connector out while slightly pulling at the ribbon cable.
Note!
Pulling at the ribbon cable or using a screwdriver at the
plug edges marked “X” may damage the plug.
5 Unsolder the YP board screening plate lugs “D” at the
position “E” and “F” and pull the plate to remove it.
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