Touch Screen Function Failure - NEC Barracuda Service Manual

8.7 Touch Screen Function Failure

Symptom:
Touch Screen Function is not working property when using Touch Pen on the Touch Screen.
P11
J5
Touch Screen
Connector
Barracuda PDA Maintenance
J5
1
1
L2 TSPY
2 60Z/100M
2
3
3
L3 TSMX
4 60Z/100M
4
5
5
L4 TSMY
6 60Z/100M
6
7
7
L5 TSPX
8 60Z/100M
8
9 9
C64 C65
100P 100P
MODEM/AUDIO
UCB1300
P11
43
IRQOUT
27
TSPY
39
SIBSYNC
28
40
TSMX SIBDOUT
41
SIBCLK
29
TSMY
42
SIBDIN
U42
30
TSPX
UCB1300BE
C66 C67
VREF_1.25V
100P 100P
16
VREFBYP
C177
0.1U
5
VSSD1
37
VSSD2
18
VSSA1
7
VSSA2
26
VSSA3
UCB1300BE
P4
UCB_IRQ
SFRM_C
RXD_C
SCLK_C
U3
Intel StrongARM®
TXD_C
SA1110
Microprocessor
135