Pioneer AVIC-Z2/XU/UC Service Manual page 305

1
2.1 Disc loading operation
A
1. When a disc is inserted, the 8/12-detection levers R and L slide. Either of the switches SW1 and SW2 is shifted
from ON to OFF, which triggers the operation of the loading motor.
2. For a 12cm disc, the switch SW3 is turned OFF and SW4 is ON during disc transportation. The microcomputer
senses that a 12cm disc is loaded.
B
C
3. For an 8cm disc, neither the switch SW3 nor SW4 will be shifted to the above states (SW3: OFF, SW4:ON) during
disc transportation. The operation mode proceeds to the clamp operation. The microcomputer senses that an 8cm
disc is loaded.
D
E
F
16
1
2
12 cm disk
C X - 3 01 6
2
3
8 cm disk
3
4
4