![background image](http://html.mh-extra.com/html/panasonic/sa-ht740gcp/sa-ht740gcp_service-manual_278276086.webp)
22.2. Basic Troubleshooting Guide for HDMI AV output
RX3707, RX3708, RX3701
R3901
LB8702
13) Hot-Plug signal
RX3706
LB3906, R3902, R3903, Q3901, D3901
16) Video data lines from LSI (IC8001) to
Up-Converter (IC3701)
14) TMDS output swing amplitude control resistor
15) Host Interface External Input Clock from
L3903, L3904, L3905
L3906
LB3905, R3905, Q3902, R3904
LB3904, R3907, Q3903, R3906
RX3902
R3921
LB3901, L3901, L3902
- Data
LB3702
- Clock
5) HDMI Transmitter communication lines to TV
2) +5V supply to TV
mode from 480p to 720p / 1080i,
- Pins : 55, 57, 62, 67, 71, 75, 79
4) HDMI Output TMDS signal lines
the TV display becomes blank.
2) When switching the video output
1) Supply for IC3701 up-conversion pin
LB3703
1) TV does not have display. Set
3) HDMI Connector Solderbility condition
FL display shows U702 / U703.
1) Check setting of the set in Setup Menu whether
HDMI video output is turned ON.
IC3952 (Pin 4)
P3901
Problems
Checking Points
Checking components
5) HDMI got no audio output.
1) Audio Data Lines
RX8403, RX8402
*Check f
f
or s
s
older s
s
hort an
an
d/or
signal c
c
ondition
component m
component
m
issing/damaged as well as
d
as well as
3) Picture shown on TV not
clear / sharp
1) Up-Converter (IC3701) Luminance output
RX3702
4) Colour Problem. TV Screen is
1) Up-Converter (IC3701) Component Y, Pb, Pr output
RX3703, RX3704, RX3705
White / Blue / Purple.
11) HDMI Pixel clock output from Up-Con to HDMI
LSI (IC8001) to Up-Con IC (IC3701)
7) Local Port Slave Address setting resistor
8) HDMI Trans3.3V supply
9) HDMI Trans1.8V supply
10) HDMI Up-con +3.3V supply
Transmitter
12) Up-Con IC I2C Data and Clock Line
IC3782 (Pin1), LB3902
LB3701
6) HDMI Transmitter communication lines from LSI
- Data , SDA
- Clock, SCL
86
SA-HT740GCP
Содержание SA-HT740GCP
Страница 7: ...7 SA HT740GCP ...
Страница 11: ...11 SA HT740GCP ...
Страница 17: ...8 New Features 8 1 About HDMI 8 1 1 What is HDMI 8 1 2 Advanced Digital Pictures 17 SA HT740GCP ...
Страница 18: ...8 1 3 Advanced Digital Sound 8 1 4 Easy to Use 8 1 5 HDMI Compatible Products 18 SA HT740GCP ...
Страница 29: ...10 1 Disassembly Flow Chart 29 SA HT740GCP ...
Страница 30: ...10 2 Main Components and P C B Locations 30 SA HT740GCP ...
Страница 39: ...Step 3 Push tray assembly to the direction of arrow shown 39 SA HT740GCP ...
Страница 52: ...SA HT740GCP 52 ...
Страница 54: ...SA HT740GCP 54 ...
Страница 62: ...62 SA HT740GCP ...
Страница 80: ...SA HT740GCP 80 ...
Страница 94: ...25 Exploded Views 25 1 Cabinet Parts Location 94 SA HT740GCP ...
Страница 95: ...95 SA HT740GCP ...
Страница 96: ...96 SA HT740GCP ...
Страница 97: ...25 2 Packaging 97 SA HT740GCP ...