Alcatel SP-R5200 Operations & Installation Manual page 81

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8-3-3 No Ring
LED BLINK?
BELL CIRCUIT PROBLEM
WAVE IN THE PIN27
BELL SIGNAL
CAN BE FOUND AT
Trouble Shooting
BL3
NO RING
TEL-LINE
YES
SQUARE
OF U5
NO
C60
YES
OK
NO
CHECK LED1 AND CONCERNED
YES
NO
CHECK U7 AND CONCERNED
COMPONENTS
OK
GO TO BL2
CIRCUIT
8-16

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