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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1) Measurement : U505
-. VCC : VREG_MSMP_2.6V (C524, C525)
-. PROX_LEDON : 17.5 kHz pulse (TP504)
-. PROX_ADC : 0.2 ~ 2.6 V (R520, C526)
Proximity Sensor
EUSY0358201
10
R534
2
ENB
GND
4
LEDA
7
LEDON
1
5
PD
PFILT
6
9
PGND
8
VCC
U505
APDS-9700
DOUT
3
C525
0.1u
R519
10
TP504
R520
100K
U504
QSDL-M900
3
DET_A
DET_K
41
LED_A
LED_K
2
R516
10K
C524
2.2u
VREG_MSMP_2.6V
C526
3300p
PROX_LEDON
PROX_EN_N
PROX_OUT
PROX_ADC
DOUT disable
PROX_ADC
VREG_MSMP_2.6V
PROX_LEDON signal output
17.5 kHz
Figure. Engineer Mode Proximity Test
PROX_ADC output
0.2 ~ 2.6 V
Summary of Contents for CT815
Page 1: ...Date May 2009 Issue 1 0 Service Manual Model CT815 Service Manual CT815 Internal Use Only ...
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