Philips MCD159, Service Manual

Page: 10 / 20

2-1 2-1
REPAIR INSTRUCTION
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no sound from
DVD
FKHFNDQGFKDQJHSRZHUVXSSO\WUDQVIRUPHUDQGSRZHU
UHFWLI\LQJFLUFXLW
FKHFNSXEOLFFLUFXWLǃSRZHUVXSSO\FLUFXLWDQGFKDQJHUHODWHG
FRPSRQHQWV
FKHFNVWHDG\YROWDJHFLUFXLW
FKHFNLIYLGHRVRFNHWǃYLGHRZLUHLVQRUPDO 03(*LVEURNHQ
FKHFNLIWLHZLUHVRIODVHKHDGDVV\LVORRVHQ
ODVHUKHDGDVV\LVEURNHQ
126281')520:+2/(81,7
126281')520:+2/(81,7 126281')520:+2/(81,7
126281')520:+2/(81,7
FKHFNLISRZHUVXSSO\RI03(*ERDUGLVQRUPDO
FKHFNDQGFKDQJHJRRGODVHUKHDGWLHZLUHV
check and change DVD related components of controlled circuit
check related components of DVD signal channel
ǃ
tie wires
ǃ
socket is nomal
check and change related components
ǃ
tie wires
ǃ
socket of DVD
FKDQJH03(*ERDUG
FKHFNLIVSHDNHULVRN
FKHFNVSHDNHUDQGRXWSXWZLUH
FKHFNLISXEOLFRXWSXWFLUFXLWRIZKROHXQLWǃ$03
FLUFXLWLVRN
check AMP IC TDA8947 and change IC
nosearch from DVD
FKFNSRZHUVXSSO\FLUFXLWRIZKROHXQLWLVRN
check staic
ǃ
noisy circuit
ǃ
CPU circuit and change
components
FKHFNLIODVHUKHDGDVV\LVQRUPDO 03(*LVEURNHQ
check if DVD controlled circuit is ok
no image from DVD
FKHFNDQGFKDQJHYLGHRZLUHǃVRFNHW
check if DVD output is ok
no
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\HV
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\HV
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\HV
FKDQJHGLVSOD\VFUHHQ
FKDQJHWLHZLUHV
FKHFNLIGLVSOD\VFUHHQLVEURNHQ
SRZHUVXSSO\EURNHQ
FKHFNWKHFDSDFLWRUYROWDJHILODPHQW
ILOWHULVVKRUWFLUFXLW
FKDQJHFDSDFLWRU
FKHFNLIWLHZLUHVLVEURNHQ
no display from display screen
no
check if voltage of filament transformer of MPEG
ǃ
-27V voltage is normal