•  The ACD-AMFM is an option board exclusively for the TU-604CI.
•  This option board can be used as an FM stereo/AM tuner when 
inserted  in  one  of  the  option  slots  on  the  main  unit's  rear 
panel.
•  The option board can be inserted into any of the option slots (3 
to 6) on the rear panel.
•  Read the main unit’s manual carefully before assembling.
•  For operating instructions, see the TU-604CI’s owner’s manual.
Check that the following parts are supplied with the product.
q Owner’s manual ...................................................................... 1
w Warranty (for North America model only) ................................ 1
e Service station list ................................................................... 1
r Audio cord ............................................................................... 1
t AM loop antenna ..................................................................... 1
y FM indoor antenna .................................................................. 1
u Hand screw ............................................................................. 2
Accessories
1Unplug the power cord.
2Make  the  preparations  for  mounting  the  option 
board.
n When mounting an option board for the first time
n When replacing option boards
3Insert the option board.
4Use the two xing screws to fasten the option board to 
the main unit.
Remove  the two  screws  fixing  the 
cover, then remove the cover.
q  Remove  the  two  screws  fixing 
the option board.
w  Screw  in  the  two  hand  screws 
about  5  mm,  then  pull  out  the 
option board.
e   Remove the two hand screws.
e ACD-AMFM  [Option Board]  Owner’s manual
NOTE
Always be sure to turn off the power and unplug the power cord before 
mounting or removing option boards. Doing so with the power turned 
on could cause damage.
Installing
NOTE
Push  the  option  board  all  the  way 
in.
NOTE
Not  fixing  the  option  board  with 
the  two  screws  could  lead to  poor 
contact or other problems.
When replacing  an option  board, we recommend  mounting the two 
hand  screws removed  in  step 2  to  the option  board  to  store them. 
(See the diagram above.)
• Reuse  the  two  fixing  screws  to 
fasten the option board.
• Be  sure  to  keep  the  removed 
cover for future use.
Reuse  the  two  fixing  screws  to 
fasten the option board.
CAUTION:
•  Because  of  risk  of  accidental  ingestion,  please  keep  small 
components such as screws out of reach of children.
• Never disassemble or modify the unit in any way.
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