JBL PULSE (serv.man2) Service Manual ▷ View online
Product Trouble Shooting Guide
JBL
PULSE Service Manual
Page 29 of 38
c、5W×2 POWER OUT
d、Build in 4000mAh battery charging via USB port
e、NFC function for ease of bluetooth connection
d、Build in 4000mAh battery charging via USB port
e、NFC function for ease of bluetooth connection
3.1．Error code-E1
NO
Error code
Testing
Remark
1
E101
3.2．Testing procedure：
2． Product photo：
1． Product function outlines：
a、AUX / Bluetooth 2.0 speaker
b、64 RGB LED to display colourful and attractive patterns
b、64 RGB LED to display colourful and attractive patterns
3. Testing station：software loading
Error description
Cannot load software
Figure 1
JBL
PULSE Service Manual
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Figure 1 shows software loading circuit. Software is loaded via programmer and supply MCU
power directly. Power supplied via TP102, TP103，MCU reset signal from TP101，data
signal from TP104，clock signal from TP105
power directly. Power supplied via TP102, TP103，MCU reset signal from TP101，data
signal from TP104，clock signal from TP105
E101 Cannot load software, testing procedure：
1、Check if TP103 connected to MCU GND，if not connected, need to connect.
2、Check if TP101,TP102,TP104,TP105 connected to GND，They should not GND.
3、Check if TP101,TP102,TP103,TP104,TP105 connected to MCU pin18, 40, 6, 12, 13
they should be connected.
4、Check if MCU is solidered correctly.
5、Connect external 3.3V power to TP102, TP103 to test if any problem on 3.3V
6、If all of the above are OK, replace MCU IC U101.
1、Check if TP103 connected to MCU GND，if not connected, need to connect.
2、Check if TP101,TP102,TP104,TP105 connected to GND，They should not GND.
3、Check if TP101,TP102,TP103,TP104,TP105 connected to MCU pin18, 40, 6, 12, 13
they should be connected.
4、Check if MCU is solidered correctly.
5、Connect external 3.3V power to TP102, TP103 to test if any problem on 3.3V
6、If all of the above are OK, replace MCU IC U101.
4.1．Error code-E2
4.2．Testing procedure:
TP304、TP312 5V circuit shown in Figure 2. USB 5V connected to J301 via L311, L310 to
charge IC U304. MCU IC U101 pin1, 44, 35 to control IC U304 and IC U304 output charging
voltage on pin11, pin12.
TP304、TP312 5V circuit shown in Figure 2. USB 5V connected to J301 via L311, L310 to
charge IC U304. MCU IC U101 pin1, 44, 35 to control IC U304 and IC U304 output charging
voltage on pin11, pin12.
4. Testing station：Voltage test
JBL
PULSE Service Manual
Page 31 of 38
Figure 2
E201 TP304 Charging 5V abnormal：
1、Visual inspection of IC U304 if soldiered OK.
2、Test pin19 voltage. If no voltage, check L311, L310 for open circuit and J301 for short circuit.
1、Visual inspection of IC U304 if soldiered OK.
2、Test pin19 voltage. If no voltage, check L311, L310 for open circuit and J301 for short circuit.
E202 TP312 Charging current abnormal：
1、TP304 voltage normal. TP312 current abnormal. Check if J302 no short circuit.
Check C343, C344, C346 no short circuit. Check if battery is good.
1、TP304 voltage normal. TP312 current abnormal. Check if J302 no short circuit.
Check C343, C344, C346 no short circuit. Check if battery is good.
E203 TP303 3.3V abnormal：
Figure 3
JBL
PULSE Service Manual
Page 32 of 38
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