Set proper pin for custom part-cooling-fan

Marlin/Configuration.h

@@ -1331,7 +1331,7 @@
 #endif
 
 // Add a menu item to move between bed corners for manual bed adjustment
-#define LEVEL_BED_CORNERS
+//#define LEVEL_BED_CORNERS
 
 /**
  * Commands to execute at the end of G29 probing.

Marlin/src/pins/ramps/pins_RAMPS.h

@@ -229,7 +229,7 @@
 
 #ifndef FAN_PIN
   #if EITHER(IS_RAMPS_EFB, IS_RAMPS_EFF)          // Hotend, Fan, Bed or Hotend, Fan, Fan
-    #define FAN_PIN        RAMPS_D9_PIN
+    #define FAN_PIN        7 // RAMPS_D9_PIN
   #elif EITHER(IS_RAMPS_EEF, IS_RAMPS_SF)         // Hotend, Hotend, Fan or Spindle, Fan
     #define FAN_PIN        RAMPS_D8_PIN
   #elif ENABLED(IS_RAMPS_EEB)                  // Hotend, Hotend, Bed