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E206 TP133 3.3Vabnormal：
TP133 checking procedure same as E203.
TP133 checking procedure same as E203.
E207 TP314 10.5V abnormal：
1、Visual inspect if U301, L301, Q302 soldiering is OK.
2、Check if R302, R305, R310 is open circuit or soldiering problem.
3、Check if power amp IC has short circuit or damaged or misplace.
1、Visual inspect if U301, L301, Q302 soldiering is OK.
2、Check if R302, R305, R310 is open circuit or soldiering problem.
3、Check if power amp IC has short circuit or damaged or misplace.
5.1．Error code-E3
E301 E302 Max output power abnormal：
1、Use a scope to check IC U203, DSP U201, U501, U502 signal in sequency.
2、Check key board and connectors are OK. Check if vol is set to max.
1、Use a scope to check IC U203, DSP U201, U501, U502 signal in sequency.
2、Check key board and connectors are OK. Check if vol is set to max.
E303 input sensitivity：
1、Check if soldiering on input signal connector is OK.
2、Check if C205, C206, C207, C216, C217, C218 is short circuit.
1、Check if soldiering on input signal connector is OK.
2、Check if C205, C206, C207, C216, C217, C218 is short circuit.
E304 E305 1W output distortion：
1、Check U501, U502 surrounding component soldiering is OK or not.
1、Check U501, U502 surrounding component soldiering is OK or not.
5. Testing station：Audio test
JBL
PULSE Service Manual
Page 34 of 38
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