RX-9010VBK
Removing the system control board / power switch board (See Fig.21 to 23)
Prior to performing the following procedure, remove the top cover and the front panel assembly. 1. Pull out the volume knob on the front side of the front panel and remove the nut attaching the system control board. 2. Remove the two screws P switch board. 3. Remove the two screws Q board. attaching the power
Volume knob Power switch board Operation switch panel Nut Front panel assembly
attaching the switch
Switch board
Fig.21
4. Remove the cords from the three hooks a. 5. Remove the eight screws R attaching the system control board on the back of the front panel. 6. On the back of the front panel, release the four joints by pushing the joint tabs inward. Remove the operation switch panel toward the front.
R
R
Cords
R
Q P
Joint Joint Joint Joint Hook a
7. Disconnect the harness from connector CN420 and CN422 on the system control board. 8. Release the two hooks b attaching the system control board.
Fig.22
System control board
CN420
Hook b
Hook b
CN422
Fig.23
System control board reverse side
Matters that require attention during replacement of IC400 (See Fig.24 to 25)
In case where there is a resistance array: Both onetime IC and mask IC can be used In case where there is no resistance array: Only mask IC can be used
IC400
