Sharp 902SH, Service Manual

Page: 31 / 121

902SH
2 – 23
CONFIDENTIAL
SD PWB
No. Checker Ref. Name
φ
Output Input Function Remarks
1 O TP2000 VPLUS2 1.2 IC2005
→
LED2005 Three-colour LED power supply
anode
2 O TP2001 VPLUS1 1.2 IC2005
→
IC2005 White LED boost output
3 TP2002 BLED – 0.3 TP3009
→
IC2005 Sub display backlight –, white LED
feedback circuit
4 O TP2003 VDD3 1.2 IC2002
→
CN2002 Camera power supply (15 V)
5 O TP2004 VOUT2 1.2 IC2002
→
CN2002 Digital power supply (1.8 V)
6 O TP2005 VDD4 1.2 IC2002
→
CN2002 Camera power supply (–8 V)
7 O TP2006 VGIG29 1.2 IC2002
→
CN2002 Digital power supply (2.9 V)
8 TP2007 BLED+ 0.3 IC2005
→
TP3008 Main display/Sub display backlight
+, white LED boost output
9 TP2008 BLED – 0.3 TP3009
→
IC2005 Sub display backlight –, white LED
feedback circuit
10 TP2009 I2CCLKB 0.3 IC1500
→
CN2002 I2C clock
11 TP2010 I2CDATB 0.3 IC1500
→
CN2002 I2C data
12 TP2011 TXON 0.3 IC1000
→
IC2005 LED control signal
13 TP2012 FLOW 0.3 IC1500
→
CN2002 FLOW control signal
14 TP2013 GAINT 0.3 CN2002
→
IC1500 Camera INT signal
15 TP2014 LEDLD 0.3 IC1500
→
IC2005 LED control select signal
16 TP2015 SEOO 0.3 IC1500
→
IC2002,
IC2005 Data
17 TP2016 SECLK 0.3 IC1500
→
IC2002,
IC2005 Clock
18 TP2017 SL_CDCE 0.3 IC1500
→
Sub Display Sub display chip enable signal
19 TP2018 SL_CDDC 0.3 IC1500
→
Sub Display Sub display data/command select
signal
20 TP2019 BDRST 0.3 IC1500
→
IC2002 Camera power supply, reset signal
21 TP2020 BDCE 0.3 IC1500
→
IC2002 Camera power supply, control
select signal
22 TP2021 SLCDRST 0.3 IC1500
→
Sub Display Sub display reset signal
23 TP2022 LEDRST 0.3 IC1500
→
IC2005 LED reset
24 TP2023 RSTGA 0.3 IC1500
→
CN2002 Camera reset signal
25 O TP2024 VOUT1 1.2 IC2002
→
CN2002 Digital power supply (3.0 V)
26 O TP2025 LEDR 1.2 LED2005
→
IC2005 Three-colour LED red cathode
27 O TP2026 VDDD 1.2 IC2004
→
CN2002 Camera driver power supply
(3.1 V)
28 O TP2027 VSD29 1.2 IC2001
→
CN2001 SD power supply (2.9 V)