Table Of Contents - Goldstar OS-7020 Service Manual

CONTENTS
1. General
--------------------------------------
Page
1
2. Specifications ---------------------------------------- 2
3. Accessories--------------------------------
5
4. External View --------------------------- --------- 7
5 •
P rev en t i
v
e Ma
i
n ten an c
e - - - - - - -- - - -- - - - - -- - · - - ·- - - 9
5-1 Cleaning ------·-----------------------·-·---- 9
5-2
Visual inspection ---------------------------
10
5-3 Periodical calibration ---------------------
10
6. Measuring instruction----------------------
11
6-1 Probe phase adjustment ---------------·------
11
6-2 Voltage measurement ------·-----------------
12
6-3 Frequency measurement ---------------------- 14
6-4 Rise (fall) time measurement -------------- 15
JI
6-5 Pulse width measurement---------------- 16
6-6 Phase measurement---------------------- 16
7.
Circuit description------------------------
18
8.
Calibration -----------------------------------
21
8-1 Period of check and calibration ----------
21
8-2 Test equipment required----------------
21
8-3 Preliminary procedure ---------------·------
21
8-4 Preliminary control settings
23
8-5 Initial starting procedure-------------- 23
9. Semiconductor lead configurations---------- 34
10. Electrical parts list ----------------------35
( 1) ATTENUATOR ------------------------------ 35
( 2) CBl
INPUT AMP ------·----------------------- 36