3
Subject to change without notice
C o n t e n t s
Analog Oscilloscope HM303-6
4
Specifi cations
5
Front Panel Elements – Brief Description
6
Short Description of HM303-6 Boards
9
1 YP Board
9
2 XY Board
9
3 TB Board
10
4 CR Board
10
5 CC Board
10
6 FC Board
11
7 PS Board
11
PCB Interconnections
12
Board Replacement
14
1 PS Board
14
2 FC Board
15
3 CC Board
17
4 YP Board
17
5 XY Board
18
6 TB Board
19
7 CR Board
20
HM303-6 Troubleshooting
21
Security advice!
21
1 Opening the Oscilloscope
21
2 Preliminary Tests
22
3 Error Diagnostics!
25
Performance Check HM303-6
31
A Test Instruments required
31
B Basic Settings
31
C Checks
31
Spare-Part List HM303-6
38
Adjustment Procedere HM303-6
39