Geely CK MR479Q 2007, Workshop Manual

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(4) Check if the radio auto-research function works
Perform the radio auto-research function to see if it works
Standard: The operation works.
Normal: Check and replace radio assembly
Abnormal: Check radio assembly (+B, ACC, GND)
(5) Check the radio assembly (+B, ACC, GND)
1
Check the continuity between terminals under each operating condition as shown in the table below.
Standard:
2
Check the voltage between terminals under each operating condition as shown in the table below.
Standard:
Abnormal: Repair or replace wire harness and connector
Normal: Check and replace radio assembly
6. The tape doesn't eject
(1) Press "EJECT" and check the operation
Press "EJECT" of the radio assembly. Check if the tape ejects.
Standard: The tape is ejected.
Abnormal: Check and replace radio assembly
Normal: Check cassette tape
(2) Check cassette tape
Check the ejected tape for trademark peeled off or tape box distortion or other issues
Standard: There is nothing wrong with the tape
Abnormal: There is something wrong with the tape
Normal: Replace it with another tape and re-check
(3) Replace it with another tape and re-check.
Replace the faulty tape with working tape to see if the same fault will re-occur.
Standard: The fault is cleared
Normal: There is something wrong with the tape
Abnormal: Check and replace the recorder assembly
Tester connection Condition Standard Status
GND Constant Status Continuity
Tester Connection Condition Standard Status
+B - GND Constant Status 10 ～ 14V
ACC - GND Ignition switch ACC or ON 10 ～ 14V