Table of Contents
Advertisement
2-B1, B2
B1
Is PSET switch
circuit normal?
Is waveform at
pin 54 PU-INNER of IC701 like
that shown in figure 16?
Check PU-INNER switch.
Check wire connector.
Check circuit around pin 54 of
IC701.
5 V
GND
Figure 16
Vref
0.4 V
Figure 17
Vref
4.5 V
Figure 18
All manuals and user guides at all-guides.com
Yes
Yes
No
Check disc motor (DC resistance :12 Ω).
Check wire connector.
Check operation of gear.
Check circuit around pin 26 (FMSO) of IC902.
Check circuit around pins 9 and 11 of IC903.
IC902 is defective.
— 14 —
B2
Does gear
and mechanism of disc motor
operate normally?
No
Is waveform at
pin 26 (FMSO) of IC902 like that
shown in figure 17?
Yes
Is waveform
at pins 9 to 11 of IC903 like that
shown in figure 18?
Yes
Yes
B3
(See page15)
No
No
Advertisement
Table of Contents
