Troubleshooting - B&K 5 Series II User Manual

16
Security
The Reference 5 S2 has the capability to lock the front panel buttons, turn off the front panel IR receiver, and
lock the memory so it cannot be changed. If the front panel IR receiver is turned off, it will also disable a key-
pad or IR sensor if a keypad or IR sensor is being used.
Selection
Memory Lock - YES or NO = Locks all personal settings from being changed.
Front Lock
IR Lock
RS-232
The main RJ-45 jack can be enabled or disabled. The baud rate can be adjusted. For best operation the
baud rate should be left at 9600. The Echo/Update feature can be toggled on or off. Echo and Update will
either echo an RS-232 message received or send out an update message indicating the unit has made a
change. The transmit and receive ID's can be adjusted for operating with RS-232 controllers. B&K provides
all RS-232 serial codes for use with RS-232 controllers. These documents in .pdf format can be found on our
website at www.bkcomp.com/support.
PROBLEM
No sound
Display will not light.
No sound
Display on.
Loud hum or buzz on
one or more channels.
Channel sounds "bad."
Remote / Keypad / IR
sensor(s) will not work.
Note: If Preamplifier continues to blow fuses DO NOT REPLACE WITH HIGHER VALUE!. Contact B&K
customer service.
ADVANCED MENU
Options
- YES or NO = Locks all front panel operation.
- YES or NO = Disables all IR communication to the preamplifier

TROUBLESHOOTING

POSSIBLE CAUSE
1. Power cord not plugged in.
2. Power off at AC source.
3. AC power inlet fuse blown or
faulty. Power switch in off position
(out).
4. Blown line fuse.
1. Preamplifier is in mute.
2. Volume control to a minimum.
3. Un-used source selected
4. Line stage or source not correctly
selected.
5. Speaker fuse blown.
1. Poor ground connection in the
interconnect cables.
2. Poor AC ground in main AC supply
3. Audio cables installed across AC
power.
4. Cold boot (power switch) or reset
the unit.
1. Batteries dead, missing, installed
wrong.
2. IR lock is enabled
3. IR lens is blocked
4. IR code-set should be set to 0-0-2.
5. Wires are crossed
Definitions
POSSIBLE SOLUTION
1. Reconnect power cord.
2. Check AC switch or fuse.
3. Push in power switch.
4. Replace line fuse with .5A 250V Fast Blow
fuse.
1. Un-mute the preamplifier.
2. Turn up volume.
3. Select source
4. Check all connections. Try substituting
cables.
5. Check all speaker fuses and replace if blown.
Replace fuse with same type and value.
1. Check all connections making sure that
cables are connected (+) to (+) and (-) to (-).
2. Check all cables and repair where necessary.
3. Reposition cables
4. See Factory reset
1. Check and replace batteries.
2. Unlock IR sensor in Advanced Security
menu.
3. Clean front panel.
4. Check IR code-set
5. Check wiring diagram on
page 13.
page 8.