User`s guide

System Repairs
77 A7 48UU Rev03 3-23
3.5 Alarm Codes and Errors
3.5.1 COM Card Alarm Code
Figure 3-10, below, shows the hexadecimal display on the two COM card types.
SW4 Enable/Disable (Hot replacement)
(Up = Disable / Down = Enable)
CR4
CR19
CR15
CR17
CR11
CR10
CR18
CR16
CR9
CR22
CR4
CR19
CR15
CR17
CR11
CR10
CR18
CR16
CR9
CR20
CR23
CR24
C25
CR26
CR22
COM card
type "028"
COM card
type "692"
3 positions slider switch
(Must be in low position)
Jumper J1
RS232 connector, (Engeenering)
Remote power connector
SW5 Attention switch
SW6 Enable/Disable switch
(8) Green LED’s (8)
(2) Yellow LED’s (7)
Rotary switches
(Must be in "00" position)
Hexadecimal display
Figure 3-10. Alarm Codes
3.5.2 Director Alarm Codes
There are two Director alarm codes.
• .OF = The DIRECTOR is Off-line.
• .DD = The DIRECTOR is no longer functioning (dead).