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21 Basic Troubleshooting Guide
21.1. Basic Troubleshooting Guide for Traverse Unit (HDMI Module P.C.B)
*Compare the above with OK condition Module
*Compare
the above with OK condition Module
Checking components
a) Check LD current
OPU unit (FFC connection)
Checking Points
8) Jitter out of specification
Problems
b) Check OPU (change to other unit and confirm)
*Check for solder short and/or component
*Check
for solder short and/or component
damaged
IC8051
Q8550, Q8560, Q8561, Q8562
Q8550, Q8551, Q8552, Q8560
*Check for solder short and/or component
*Check
for solder short and/or component
missing/damaged
*Check for solder short and/or component
*Check
for solder short and/or component
damaged
Q8550, Q8551, Q8552, Q8560, Q8561, Q8562
FP8201
IC8251
IC8251
Q8550, Q8551, Q8552, Q8560, Q8561, Q8562
IC8001
*Check for solder short and/or component
*Check
for solder short and/or component
missing/damaged
LB8301, R8321, R8322, LB8302, R8325, R8326
IC8421
*Check for solder short and/or component
*Check
for solder short and/or component
missing/damaged
a) Check laser drive circuitry (voltages and current)
- Check CD laser drive
*Compare the above with OK condition Module
*Compare
the above with OK condition Module
- Check DVD laser drive
*Check voltages and LD current and compare with
*Check
voltages and LD current and compare with
OK Module
OK
Module
a) Check SDRAM address and data bus signal
b) Check video signals
c) Check audio DAC circuitry
signals
Traverse unit
b) Check laser drive circuitry (voltages and current)
c) Check LSI connection to motor drive circuitry
*Compare the above with OK condition Module
*Compare
the above with OK condition Module
a) Check connection from Backend Module to
b) Check motor driver circuitry on voltages and control
*Compare the above with OK condition Module
*Compare
the above with OK condition Module
a) Check motor driver circuitry (voltages)
7) Block noise during play
spinning
- Cannot read CD
- Cannot read DVD
movement
6) Cannot read disc but spindle is
3) Disc not spinning
4) Traverse not moving
5) Traverse and spindle abnormal
2) No TOC/Long TOC
Checking components
1) Distorted picture or abnormal
sound is heard during initialisation
Problems
Checking Points
a) Check SDRAM address, data bus, CLK and
other control signals waveform
IC8051
93
SA-HT855E / SA-HT855EB / SA-HT855EG
Содержание SA-HT855E
Страница 7: ...3 Precaution of Laser Diode 7 SA HT855E SA HT855EB SA HT855EG ...
Страница 9: ...5 Caution for AC Mains Lead 9 SA HT855E SA HT855EB SA HT855EG ...
Страница 11: ...11 SA HT855E SA HT855EB SA HT855EG ...
Страница 13: ...8 Operation Procedures 8 1 Operating instructions 13 SA HT855E SA HT855EB SA HT855EG ...
Страница 14: ...8 2 Main Unit Keys Operation 14 SA HT855E SA HT855EB SA HT855EG ...
Страница 16: ...8 3 2 Connecting with HDMI compatible TV Set Top Box 16 SA HT855E SA HT855EB SA HT855EG ...
Страница 17: ...8 4 Use of HDAVI Control 17 SA HT855E SA HT855EB SA HT855EG ...
Страница 18: ...8 5 Using of Music Port MONO ST E AC G H B SR H W 18 SA HT855E SA HT855EB SA HT855EG ...
Страница 20: ...8 6 2 File Extension Type Support WMA MP3 JPEG MPEG4 DivX 20 SA HT855E SA HT855EB SA HT855EG ...
Страница 21: ...8 7 About DivX VOD Content 21 SA HT855E SA HT855EB SA HT855EG ...
Страница 28: ...28 SA HT855E SA HT855EB SA HT855EG ...
Страница 34: ...11 1 Disassembly Flow Chart 34 SA HT855E SA HT855EB SA HT855EG ...
Страница 35: ...11 2 Main Components and P C B Locations 35 SA HT855E SA HT855EB SA HT855EG ...
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Страница 60: ...SA HT855E SA HT855EB SA HT855EG 60 ...
Страница 68: ...SA HT855E SA HT855EB SA HT855EG 68 ...
Страница 70: ...70 SA HT855E SA HT855EB SA HT855EG ...
Страница 102: ...24 Exploded Views 24 1 Cabinet Parts Location 102 SA HT855E SA HT855EB SA HT855EG ...
Страница 103: ...103 SA HT855E SA HT855EB SA HT855EG ...
Страница 104: ...24 2 Packaging 104 SA HT855E SA HT855EB SA HT855EG ...