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Diagnostic Software, Trouble Shooting and Test Instructions
EN 25
DVD580M
5.
5.3.10 Microphone Not Working
Figure 5-10
5.3.11 Microphone Cannot Sw Off
Figure 5-11
No voice from Microphone
Check point : the Q17 on decoder board
Observe : check the collector terminal voltage is +0v7
Solution : replace the transistor
Go
No
Solution : check the +5V supply
circuit, replace any defected
components
Solution : replace the Q16
Solution : Replace U205 on power
supply board (karaoke part) if no
signal output from pin 15
Check point : Q16 on decoder board
Observe : check if the Collector terminal is short circuit to
ground
Check point : Microphone input
Observe : check if the any signal presenting at pin 1 of CN205
by hitting the microphone
Check point : pin 1 of U205 on power supply board
Observe : check the +5V is presented
Yes
Yes
Yes
No
No
Yes
Check point : VA+ and VA- on Microphone board
Observe : check if the supply voltage is + / -- 9v3
No
Solution : check the connector
between power board and
Microphone board
No
Solution : replace the U401 on Microphone board
Yes
CL 26532085-069.eps
180702
Cannot turn OFF the voice from Microphone
Check point : Microphone control key on remote control
Observe : press the key and check the voltage changes on
R114
Solution : check if any short circuit at
signal link
Go
No
Solution : Replace Q17
Solution : check and replace Q16 if
defected
Check point : collector terminal of Q17 on decoder board
Observe : check the voltage is 0v7
Yes
No
Yes
CL 26532085-070.eps
180702
Содержание DVD 580M
Страница 2: ...Technical Specifications EN 2 DVD580M 1 1 Technical Specifications CL 26532085_073 eps 180702 ...
Страница 4: ...Directions for Use EN 4 DVD580M 3 3 Directions for Use ...
Страница 5: ...Directions for Use EN 5 DVD580M 3 ...
Страница 6: ...Directions for Use EN 6 DVD580M 3 ...
Страница 7: ...Directions for Use EN 7 DVD580M 3 ...
Страница 8: ...Directions for Use EN 8 DVD580M 3 ...
Страница 9: ...Directions for Use EN 9 DVD580M 3 ...
Страница 10: ...Directions for Use EN 10 DVD580M 3 ...
Страница 11: ...Directions for Use EN 11 DVD580M 3 ...
Страница 12: ...Directions for Use EN 12 DVD580M 3 ...
Страница 28: ...Diagnostic Software Trouble Shooting and Test Instructions EN 28 DVD580M 5 Personal Notes ...
Страница 32: ...32 DVD580M 7 Electrical Diagrams Layout Power Board CL 26532085_039 eps 180702 ...
Страница 37: ...Electrical Diagrams 37 DVD580M 7 Layout Decoder Board Top Side CL 26532085_026 eps 180702 ...
Страница 38: ...38 DVD580M 7 Electrical Diagrams Layout Decoder Board Bottom Side CL 26532085_027 eps 180702 ...
Страница 40: ...40 DVD580M 7 Electrical Diagrams Layout AV Board Only For NON EU MOdels CL 26532085_028 eps 180702 ...
Страница 42: ...42 DVD580M 7 Electrical Diagrams Layout AV Scart Board Only For EU Models CL 26532085_078 eps 190702 ...
Страница 44: ...44 DVD580M 7 Electrical Diagrams Personal Notes Personal Notes ...