Table of Contents
Advertisement
ELECTRICAL TROUBLESHOOTING GUIDE -7/10
QQ
3 7 63 1515 0
5. RF/Servo Circuit
A.
CHECK POINT(General)
Does signal goes
"High" to IC201 Pin194 when the
power is on?
YES
Does signal pulse
input to IC201 Pins 58, 59 when
the powe is on?
YES
Does
TTL pulse output to
IC201 Pins 140, 142?
YES
TE
L 13942296513
Is IC201
Pins 83, 84, 88, 89 voltage
about 2.2V?
YES
END
www
.
http://www.xiaoyu163.com
NO
NO
NO
33.8688MHz clock input
(IC206 soldering or IC defect).
NO
x
ao
u163
y
i
http://www.xiaoyu163.com
2 9
8
Check "2.µ-COM Part".
Does
NO
to IC201 Pin 63?
YES
Q Q
Replace IC201
3
6 7
1 3
Check power circuit.
.
-79-
9 4
2 8
Replace X301 or IC304
(30MHz clock defect)
1 5
0 5
8
2 9
9 4
m
co
9 9
2 8
9 9
Advertisement
Table of Contents
