Manual

< 5. MAINTENANCE >
5-3
IM 12T03A01-02E
F0502.ai
Check point
1
2
3
4
5
6
7
8
9
Measuring instrument Measuring conditions Normal value
12 V±10 %
200 V±10 %
5.8 to 6.4 V

;N5DQJH
6 to 8 V p-p
150 to 200 V p-p
200 mV p-p
4 to 6 V p-p
-3 to 0 V
A5 – B5
A6 – B5
B – B5
IN –
B4 – B5
5±%
A – B5
C – B5
D – B5
DC voltmeter
For measurement of 2 ,
the meter input impedance
VKRXOGEHDWOHDVW0ȍ
Multimeter
Oscilloscope
DC voltmeter
Disconnect leadwires from terminals
,15DQG%RQ3&%FRQQHFWDQ
RVFLOODWRUWR+]RXWSXW9
and apply an input of 100 mV rms.
Lower 100 mV rms input
5HPHGLDOPHDVXUH
for abnormal value
&KHFNFRQYHUWHU,1387
assembly.
5HSODFH'
Check pickup electrode.
Check for defective circuit
components and replace
them.
7HUPLQDO
Box
Black
White
Blue
Yellow
Green
Brown
Green
3W
White
A5
A6
IN
B5
A2
A3
A4
Y1
Y2
Y3
5HG
B4
B
5
Black
5HG
3LH]RHOHFWULF
element
Case ground
C
D
B
D8
1mS
6V
A
Vibrator output
wavefarm between
B4 and B5 when
density detector is
operating normally.
(Note) Regading to repair parts, consults with service personnel.
Figure 5.3 Oscillation Amplifi er Check Points