hello this Service Manual PIONER KXE60 is very good, thanks.
Text excerpt from page 22 (click to view)
6.10. Removal of Analysis Block 1. Remove the lamp unit according to the section 6.9. "Removal of Lamp Unit". 2. Remove the upper case according to the section 6.2. "Removal of Upper Case". 3. Remove the A-P.C.Board according to the section 6.3. "Removal of A-P.C.Board". 4. Unscrew the 2 screws and remove the intake duct (1) block (with RP.C.Board).
5. Unscrew the 1 screw, then remove the thermofuse cover and the thermofuse.