• Philips DCM5090/10 - brak reakcji

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Philips DCM5090/10 - brak reakcji

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 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

#1 Philips DCM5090/10 - brak reakcji

by dernis • 4 December 2021, 10:45
witam,

Wieża jak w tytule.. Podczas słuchania muzyki podobno przestała działać..

Wyświetlacz nie reaguje, nie wyświetla żadnej tresci.. świeci tylko niebieska dioda..

Pomiary jakie wykonałem:

CN103:
1- 4,85V
3,4 - 0V
5,6 - 0V
7 - 0V
9 - 0V
10 - 4,6V

IC 401 - 3,3V
IC 402 - 1,8V
IC 403 - 0,49V
IC 404 - 0V

Na włącznik w panelu przychodzi 3,3V i sciagane jest do masy po wciśnięciu ale nie ma żadnej reakcji. Może ktoś pomoże.. schemat jest dostępny ale nie wiem kiedy mają się pojawić napięcia których nie ma...

Re: Philips DCM5090/10 - brak reakcji

by Google Adsense [BOT] • 4 December 2021, 10:45

#2 Re: Philips DCM5090/10 - brak reakcji

by matic • 4 December 2021, 12:44
dernis wrote:Na włącznik w panelu przychodzi 3,3V i sciagane jest do masy
Hello!
On which board the power button is located?

Measure the voltages to ground on pins 1, 9, 10, 11, 12, 15, 16, 20, 34, 35, 61, 69, 71, 72, 86, 87, 96, 100, 102, 103, 108, 110, 113, 114, 115, 116, 117, 118, 120, 121, 122, 123, 126, 127 of µP chip IC101.

#3 Re: Philips DCM5090/10 - brak reakcji

by dernis • 4 December 2021, 14:44
On front panel (VFD & KEY & LED BOARD)

Image

1 -3,3V
9 - 3,3V
10 - 0V
11 -3,3V
12 - 3,3V
15 - 3,3V
16 - 0V
20 - 1,8V
34 - 3,3V
35 - 3,3V
61 - 3,3V
69 - 2,7V
71 - 1,1V
72 - 1,0V
86 - 3,3V
87 - 1,1V
96 - 0,1V
100 -2,1V
102 - 1,8V
103 - 3,6V
108 - 3,3V
110 - 1,8V
113 - 3,3V
114 - 2,7V
115 - 3,3V
116 - 3,3V
117 - 3,3V
118 - 3,3V
120 - 1,3V
121 - 1,6V
122 - 0,1V
123 - 2,1V
126 - 2,0V
127 - 2,8V

#4 Re: Philips DCM5090/10 - brak reakcji

by matic • 4 December 2021, 16:22
Measure the voltages to ground on pins 68, 76, 105 of µP chip IC101 in the following cases:
a) Before pressing to the power button.
b) After pressing to the power button.
c) Power button pressed.

#5 Re: Philips DCM5090/10 - brak reakcji

by dernis • 5 December 2021, 13:33
OK...

is this value correct???
IC 101:
pin 100 - 2,1V (USB_3,3V)

a) Before pressing to the power button:
68 - 3,3V
76 - 0V
105 - 3,3V

b) After pressing to the power button:
68 - 3,3V
76 - 0V
105 - 3,3V

c) Power button pressed.
68 - 0,7V
76 - 0V
105 - 0,2V

#6 Re: Philips DCM5090/10 - brak reakcji

by matic • 11 December 2021, 12:51
dernis wrote:is this value correct???
IC 101:
pin 100 - 2,1V (USB_3,3V)
I think it should be 0V, when the device is turned off and around 3V, when the device is turned on.

Remove the resistor R151 from the board and remeasure the voltages to ground on pins 69, 100 of µP chip IC101.

Re: Philips DCM5090/10 - brak reakcji

by Google Adsense [BOT] • 11 December 2021, 12:51
 This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).
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