55
Subject to change without notice
27) R9008: Y-Gain CH I.
press Cursor Down pushbutton once.
Y1/2-GAIN is highlight, press CURSOR ON/OFF pushbutton.
Locate and identify R9008 (27) on YF-Board.
Connect a 25mVpp/1kHz square wave signal via
50Ω
cable and
50Ω
through terminator
to input channel I.
Set time base to 1ms/div.
Adjust R9008 (27) for 5 division signal height.
Note:
This adjustment affects Y-Gain CH II.
28) Y-Gain CH II.
Note:
The adjustment under item 27) must be finished before this procedure is started.
Press TRIG.SOURCE pushbutton once.
Connect a 25mVpp/1kHz square wave signal via
50Ω
cable and
50Ω
through terminator
to input channel II.
Set time base to 1ms/div.
Press VAR. pushbutton for CH II once
Rotate VAR.(28) for 5 division signal height.
Press RECALL pushbutton to exit Y1/2-GAIN adjust.
29) R7002, R7003, R7001, R 7005: Readout Position.
Press Cursor Down pushbutton once.
Y1/2 POSITION is highlight, press CURSOR ON/OFF pushbutton.
Readout net and two traces appears.
Locate and identify R7002 (29A), R7003 (29B), R7001 (29C)and
R 7005 (29D) on Readout-Board.
Adjust net with R7002 (29A), R7003 (29B), R7001 (29C)and
R 7005 (29D) to the position on the CRT-GRID.
Set trace with POS I to upper net line.
Set trace with POS II to lower net line.
Press SAVE pushbutton once.
Set trace with POS I to lower net line.
Set trace with POS II to upper net line.
Press SAVE pushbutton once.
Press RECALL pushbutton to exit Y1/2 POSITION adjust.
Press AUTOSET pushbutton once to exit CALIBRATION MENUE.
30) R4839: XY-Gain
Press CH II pushbutton to switch channel II on.
Press CH I pushbutton to switch channel I off.
Locate and identify R4839 (30) on MB-Board.
Connect a 10kHz square wave signal of 25mVpp amplitude (HZ60-2) to input CH II.
Press XY pushbutton.
Set X-POS control that the left dot coincides with the graticule center.
Adjust R4839 (30) for a distance of 5 division between left and right dot.
31) VR7006: Calibrator Output.
Locate and identify VR7006 (31) on Readout-Board.
Connect a digital multimeter to the 0.2Vpp calibrator output.
Set up the digital multimeter for DC measurement on a suitable sensitivity setting.
Locate and identify IC7010 on CT-Board.
Connect pin 1 and pin 14 of IC7010 galvanically together.
Adjust VR7006 (31) for exactly 200mV ± 1mV DC.
Remove the connection between pin 1 and pin 14 of IC7010.
Connect a 10:1 probe to the 0.2Vpp calibrator output and connect it to the CH I input of the scope.
Set time base to 0.2ms/div.
Содержание HM1004
Страница 1: ... Instruments SERVICE MANUAL HM1004 Oscilloskop HM1004 ENGLISH 4S 1004 00E0 01 NOV 1996 ...
Страница 5: ...Subject to change without notice 4 HM1004 Block diagram ...
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Страница 8: ...7 Subject to change without notice AT Board ...
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Страница 12: ...11 Subject to change without notice MB Board ...
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Страница 21: ...Subject to change without notice 20 YF Board ...
Страница 22: ...21 Subject to change without notice YF Board Top and Bottomside ...
Страница 23: ...Subject to change without notice 22 Readout Board ...
Страница 24: ...23 Subject to change without notice Readout Board rd1004 sch 2 Wed Sep 25 11 50 19 1996 ...
Страница 25: ...Subject to change without notice 24 J7012 Readout Board Bottomside ...
Страница 26: ...25 Subject to change without notice Readout Board Topside ...
Страница 27: ...Subject to change without notice 26 key1007 sch 1 Wed Sep 25 11 51 53 1996 FC Board FC Board 1004 ...
Страница 28: ...27 Subject to change without notice key1007 sch 2 Wed Sep 25 11 52 15 1996 FC Board FC Board 1004 ...
Страница 29: ...Subject to change without notice 28 FC Board Topside ...
Страница 30: ...29 Subject to change without notice Processor Board Proc Adapt Z86E63 ...
Страница 31: ...Subject to change without notice 30 FC Board Bottomside and Processor Board ...
Страница 32: ...31 Subject to change without notice IF Board Note IF304 IF1004 1505 ...
Страница 33: ...Subject to change without notice 32 IF Board Top and Bottomside ...
Страница 34: ...33 Subject to change without notice CRT Board ...
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Страница 42: ...41 Subject to change without notice HM1004 1505 Adjustment Procedure ...
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