LG 42PC7DH-UL (CHASSIS:PA75C) Service Manual ▷ View online
- 17 -
Block Diagram
Power Sequence and Flow Diagram
+6.0V
+6.0V
REG
IC
BIAS
Side power
IC800
PQ05DZ1U
TUNER
+5V_TU
Power_CTL_3.3V
Tuner SIF
IC801
PQ05DZ1U
+5.0V
IC102
CAT24WC
(HDCP KEY EEPROM)
BIAS
BCM PCI
단
BCM SCL/SDA0~1
BCM DS-AGC,AUD_VDD
BIAS
IC200
TPS2052
(USB power CTL
analog SW)
IC403
AT24C512W
(EEPROM NVRAM)
Inv/RL/live-on
3.3V->5V
IC502
CS5340
(Audio ADC)
입력단자
HPD
IC601/602/603/701
AT24C02BN
(EEPROM EDID)
EDID EEPROM
W/P
IC600
3:1HDMI SW
SCL/SDA
IC700
74F08D
(RGB HV AND GATE)
IC808
FMS6400
(Tuner video buffer)
IC900
M62320FP
(FAN driver)
IC903
LM75CIMX-3
(FAN
온도센서
)
IC804
AZ1117H-3.3
IC802
AZ1117H-3.3
D3.3V_BCM
IC101
Flash MEM 32M
Reset SW
BCM3553
IC401
74LVC14ADW
Reset
슈미트트리거
A3.3V_BCM
BCM3553
DAC/USB,AGC,HDMI
BOOT
STRAP
IC600
PICHDMI341
HDMI 3:1 SW
3.3V_TMDS_SW
- 18 -
Block Diagram
Power Sequence and Flow Diagram
+3.3V
+3.3V
REG
IC
BIAS
Side power
Power_CTL_2.6V_1.2V
IC803
SC1566I5M
D2.6V_BCM
BCM3553
IC300,301,302,303
DDR IC
전원
IC200,201
TPS2052BD
(USB analog SW)
IC501
NTP3000 (sound IC)
IC502
CS5340
(Audio ADC)
IC503
TC74VHC04FT
(coxial
SPDIF IC)
JK501
SPDIF power
IC407
MTV416GMF
+3.3V detect signal
BIAS
LVDS
Tuner CTR
IC304
5C25955TR
DDR Memory
DDR0_VTT DDR0_REF
BCM3553
A2.6V_BCM
IC805
SC4519STRT
DC-DC converter
BCM3553
D1.2V_BCM
A1.2V_BCM
Power_CTL_2.6V_1.2V
IC807
AZ1117H-1.8
IC501
NTP3000
(sound IC)
+1.8V_NTP
- 19 -
MEMO
- 20 -
VISTA EN DESPIECE
305
300
306
121
600
601
304
200
206
580
303
501
520
590
400
240
201
202
205
203
204
250
900
502
301
302
120
570
560
310
A2
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