JRC JCY-1900 - Page 89

4. TROUBLE SHOOTING
JCY-1900
/
1950
V
DR Service Manual
71
DOC No. 7ZPNA4409
Error
codes
Error
type
Indication Contents Actions to take
201 -212
CAUTION Microphone
(CH1〔~12〕) failure
The result of self-diagnosis test has a problem.
1) Try retest by check function under noise-free environment.
（Refer to Installation Manual (Hardware Part) 5.5.）
2) Check the connection to the RCU and inside the microphone.
（Refer to Installation Manual (Hardware Part) 3.3.5.）
3) Check that CD206 of ARB is on during the test.（Refer to Installation Man-
ual (Hardware Part) 5.3.2.）
4_1) CD206 is off ： Replace the ARB.（Refer to Service manual 2.5.4.）
4_2) CD206 is on ： Replace the MIC or WPMIC. * When the loud noise exists around the unit, even if the unit is normal, the
test may fail.
221 WARNING ARB initialization
failure
The initialization of ARB failed. 1) Reboot the RCU. After reboot, check the LED of the ARB is blinking.
(Refer to5.3.2.)
2) Replace the ARB. （Refer to Service manual 2.5.4.） 3) Replace the MCB. （Refer to Service manual. 2.5.6）
222 WARNING ARB control failure There is no response of ARB. It is the same with the above. 223 WARNING ARB internal failure The internal error of ARB is
occuring.
It is the same with the above.
301 -324
CAUTION Sensor reception
failure (Serial CH1〔~24〕)
The sensor data could not re- ceive.
1) Check the connection.
（Refer to Installation Manual (Hardware Part) 3.3.8.）
Check that the LED for serial received signal is blinking.
(Refer to Installation Manual (Hardware Part) 5.3.2).
2) Not blink：There is no transmitted signal. Check the output of sensor
equipment.
3) Blink：Check the setting in maintenance software.
(Refer to Installation Manual (Software Part) 4.4). Replace the MCB. （Refer to Service manual 2.5.6.）