Loewe 67501 D 00, Руководство по обслуживанию

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67501 T/D 00
2 – 6
No replay audio output from each audio output terminal.
Is audio output from each audio output terminal?
J2401
Check the connected cables and their contacts.
Check the input of the connected TV set or amplifier.
NO
YES
Is audio signal input into each audio output terminal?
1) 2ch analog audio connection
Is audio signal input into pins (2) (AUD_MIN_L) and (7)
(AUD_MIX_R) of J2401?
2) 5.1ch audio connection
Is audio signal input into pins (4) (AUD_L), (8) (AUD_R), (6)
(AUD_SL), (9) (AUD_SR), (11) (AUD_CTR) and (12)
(AUD_SW) of J2401?
Check each terminal or replace them.
Check each audio line.
YES
NO
Is audio signal output from each terminal of CN2101?
1) 2ch analog audio connection
Pins (12) (AUD_MAIN_L) and (14) (AUD_MAIN_R) of
CN2101
2) 5.1ch audio connection
i) Audio for front L and R channels
Pins (4) (AUD_L) and (6) (AUD_R) of CN2101
ii) Audio for surround L and R channels
Pins (1) (AUD_SL) and (2) (AUD_SR) of CN2101
iii) Audio for subwoofer channel
Pin (10) (AUD_SW) of CN2101
iv) Audio for center channel
Pin (8) (AUD_CTR) of CN2101
Check the audio mute circuits (Q2101, Q2102, D2101 and D2102).
Or check F_MUTE and AUDMAINMUTE lines.
Is the audio muted? Q2102 collector "H"
NO
YES
YES
NO
NO
Is audio signal output from each connector pin in the main
PWB?
1) 2ch analog audio connection
Pins (12) (AUD_MAIN_L) and (14) (AUD_MAIN_R) of
SC5602
2) 5.1ch audio connection
i) Audio for front L and R channels
Pins (4) (AUD_L) and (2) (AUD_R) of CN5602
ii) Audio for surround L and R channels
Pins (1) (AUD_SL) and (2) (AUD_SR) of CN5602
iii) Audio for subwoofer channel
Pin (10) (AUD_SW) of CN5602
iv) Audio for center channel
Pin (8) (AUD_CTR) of CN5602
Check SC5602.
YES
Main PWB No.4
FLOW CHART No.2