Only For Training And Service Purposes - LG GT500 Service Manual

4. TROUBLE SHOOTING
Check 3. 26MHz at BB part
Test Point (Crystal Part)
RF_CTRL_STR_1
RF_CTRL_DATA
RF_CTRL_CLK
TESTOUT
MCLKREQ
MCLK
R144 0
TN4-26562
2 GND1
HOT2
3
TP1
LGE Internal Use Only
TP1
Test Point (Crystal Part)
Figure 4-18. Test point (26MHz at BB part)
10
STR
11
DATA
12
CLK
13
TESTOUT
14
CLKREQ
15
MCLK
17
XON
26MHz 18
XOP
HOT1
1
20
MCLKSEC
GND2
4 21
X100 VCCD
23
WTXLP
24
WTXIN
25
WTXQP
26
WTXQN
Figure 4-19. Schematic (26MHz at BB Part)
Figure 4-20. 26MHz at TP1
MCLK
RF3300
MCLK
RTCCLK
BT_CLKREQ_n
MCLKREQ
SYSCLK0
SYSCLK1
USB_XTAL1
ACC_IRQ_n
APP_IRQ_n
- 130 - Copyright © 2009 LG Electronics. Inc. All right reserved.
DB3200
E17
MCLK
A15
RTCCLKIN
B18
SYSCLKREQN
R200 3.3K B17
MCLKREQ
A18
SYSCLK0
A17
SYSCLK1
A19
SYSCLK2
C19
MSACCIRQN
C20
MSAPPIRQN

Only for training and service purposes