LG 60PZ540-UB / 60PZ550-UA (CHASSIS:PU13A) Service Manual ▷ View online
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USB Trouble Shooting
36/37
CVBS waveform
IF waveform
TAS5709
(Digital AMP)
Reset
I2S
BCM3549XS
MCLK
HDMI CEC
IR
CVBS
Buffer
SIF
Buffer
RS-232C
I2C
CVBS(ATV)
NTSC/ATSC
TUNER
X-tal
(54MHz)
NAND Flash
(2GB)
DDR2 (512MB)
TDVJ-H001F
KIA7427AF
KIA7427AF
24C16
24C16
Local
Local
KEY
KEY
MAIN IF
DP/DM
DP/DM
NEC
NEC
Micom
Micom
COMP1
COMP2
Y/Cb/Cr
Y/Cb/Cr
R/G/B
RGB-PC
Rear AV
CVBS
Side AV
CVBS
AV1,2 L/R
COMP 1,2 L/R
L/R
L/R
RGB-PC
Audio In
Rear HDMI 1/2/3
Side HDMI 1
SIF
Audio
Front
End
Video
Front
End
TMDS/DDC
HDMI
RX
Digital out
Full HD(1080P)
HD/SD
Video
Encoder
Audio
DSP
SPDIF Out
UART
RX/TX
UART
UART
USB 2.0
RMII
RMII
24C01
DDC
SIF
TDA19997
TDA19997
HDMI SW
LAN
LAN
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USB Trouble Shooting
Check USB 2.0 Cable for damage or open
conductors
Check IC1101/2 voltage level 5V
Y
N
Replace IC1101/2
Check P1101/2
Replace P601
Y
N
Replace BCM3549XS (IC501)
Y
• Exception
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
37/37
Great Company Great People
USB Trouble Shooting
Check USB 2.0 Cable for damage or open
conductors
Check IC1101/2 voltage level 5V
Y
N
Replace IC1101/2
Check P1101/2
Replace P601
Y
N
Replace BCM3549XS (IC501)
Y
• Exception
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
37/37
Great Company Great People
USB Trouble Shooting
Check USB 2.0 Cable for damage or open
conductors
Check IC1101/2 voltage level 5V
Y
N
Replace IC1101/2
Check P1101/2
Replace P601
Y
N
Replace BCM3549XS (IC501)
Y
• Exception
- USB power could be disabled by inrushing current
- In this case, remove the device and try to reboot the TV (AC power off/on)
37/37