Pioneer DVH-3900MP/XZ/EW5 Service Manual page 34

1
QQ
3 7 63 1515 0
6-A
A
Front LCD :
"INIT" display?
YES
Checked the
Input voltage of
MPEG IC?
YES
B
Checked the
GND condition of
MPEG IC?
YES
Checked
the MPEG
Reset?
YES
Check
C
the MPEG
X-tal?
YES
TE
L 13942296513
Checked the
main Micom data
interface?
YES
Checked the
main Micom data
interface?
D
YES
OK
E
www
F
34
1
http://www.xiaoyu163.com
2
IC1301(VDD33,
NO
VDD12, +3VA)
See Figure 13
IC1301 VSS (1, 23,
NO
35, 46, 63, 81, 100,
171, 180, 198, 208,
220, 234, 235)
IC401(23),
NO
IC203(5, 6), CN902(10)
IC1301 NRST(101)
NO
X1301(1, 3)
See Figure 14
NO IC401(84, 85, 86, 29),
CN902(4, 5, 6, 7)
IC1301(84, 85, 86, 87)
NO CN902(4, 5, 6, 7)
CN1601(4, 5, 6, 7)
See Figure 15
x ao
y
. i
DVH-3900MP/XZ/EW5
2
http://www.xiaoyu163.com
3
8
6-B
No display
on monitor?
YES
Checked the
MPEG Video signal
out?
YES
Check the Video
Amplifier Vcc,
GND?
YES
Check the Video
Amplifier In,
Out?
YES
Check the Video
switching IC Vcc &
GND?
YES
Q Q
Check
3 6 7 1 3
the Video switching
IC In, Out, mute
signal?
YES
Check the
RCA cable?
YES
OK
u163
.
3
4
2 9 9 4 2 8
NO
IC1301(161)
NO
IC1603(3, 5)
See Figure 30
NO
IC1603(2, 4)
See Figure 30
NO
IC403(6, 7, 8)
1 5 NO 0 5 8 2 9 9 4
IC403(3, 4, 5)
See Figure 31, 32
NO
CN403(1,2)
m
co
4
9 9
2 8 9 9