4-26
BRC-300/300P
BRU-300/300P
Does the unit
correctly function when
another BRBK-301 is
connected to the slot
on the main unit ?
Does
+
3.3 V exist in
L7006, L7007 on the
AN board ?
Yes
No
Yes
AN board failure
(IC7009, Q7001, Q7003,
or the peripheral circuit)
Replace the defective
parts or this unit.
Is
+
12 V supplied to
pins A1 to E1of CN7001
on the AN board ?
Yes
No
Does
_
3.3 V exist in
L7008 on the AN board ?
AN board failure
(IC7010, Q7002, Q7004,
or the peripheral circuit)
Replace the defective
parts or this unit.
No
Yes
No
Is the pin A13
voltage of CN7001 on the
AN board 0 V ?
Yes
AN board failure
(R7001 or the peripheral
circuit)
Replace the defective
parts or this unit.
No
Go to
4
(Next page)
AN board failure
Replace this unit.
Does the unit
correctly function when
connected to a normal
BRC-300/P ?
Yes
BRBK-301 connection
failure
Connect this unit to the
BRC-300/P or the
BRU-300/P securely.
No
e-1
BRC-300/P failure
Go to a-10.
BRU-300/P failure
Go to c-6.
4-6. Optional Cards
n
When checking the optional card, extend the card using the extension board EX-947.
4-6-1. BRBK-301
e-1.
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