CH-X470RF
1-21
Troubleshooting
Servicing procedures for CH-X470RF error displays
Error display
Servicing procedure
E1: Eject error
E2: Position
motor error
The lifter does not move up and down when exchanging or ejecting discs.
After resetting, check whether or not the lifter moves.YES 3, NO 4
3If the lifter exceeds the required disc position, check the lift position input. (IC601 pin 76)
If the lifter does not reach the required disc position, check the mechanism (mainly the lifter
elevation mechanism)
4Check that voltage is present at the motor terminal.
If voltage is present, check the lifter elevation mechanism. If voltage is not present, separate the
motor from the circuit and check again whether or not voltage is present.
If voltage is present, next check that the armature resistance of the position motor (resistance
between motor terminals) is approx. 12 .
If the resistance is excessively low (1 - 2 ), the motor is defective.
The magazine cannot be ejected until S601 (magazine switch) turns off.
Can the magazine be ejected? YES 1, NO 2
1 The magazine switch (S601) does not turn off even though the magazine is completely ejected.
2 Check that the magazine is not engaged with the mechanism assembly.
E3: Tray motor
error
Trays cannot be opened or closed when exchanging or ejecting discs.
Does the tray move when changing or ejecting discs? YES 5, NO 6
5Check that TRAY OUT SW (S602) and TRAY IN SW (S603) function correctly.
E4: Pick returning
error
Does the feed (pickup unit) return to the inner area of the disc when ejecting?
YES 7, NO 8, 9
7 Check the rest switch.
8If the feed gear is rotated, check the feed transfer mechanism
9If the feed gear is not rotated, check the motor driver and the pattern.
E8: Connection
error
When selecting the CD Changer mode using function keys, etc., the unit does not enter the CD
changer mode, or the E8 error display appears. This signifies trouble relating to communications.
aCheck the connection cables between the CD changer and the receiver (CD changer controller).
bCheck the CD changer power cord and the fuse (including F901 on the PC board).
cCheck IC651 and its peripheral circuits.
6Check that the drive voltage is applied to the motor terminal.
If the voltage is present, check the tray mechanism.
If the voltage is not present, separate the motor from the circuit and check again whether or
not the voltage is present.
Other errors occurring in the receiver or controller.
The E1 E8 error displays described above may appear as E-1 E-8, 1E1 1E8, R-1 R-8, or RST1 RST8,
depending on the product.
When opening
When closing
S602 & IC601 pin (46)
S603 & IC601 pin (45)
H
H
L
L
