Sony MHC-V21 - Connecting this system with multiple BLUETOOTH devices (Multi-device connection); One Touch BLUETOOTH Connection by NFC

27
MHC-V21/V21D
Ver. 1.1
MOTHERBOARD Board Mount Amplifi er Diagnosis Flow (1/3) 1. “PROTECT3” is displayed after turning the power on
“PROTECT3” is displayed on the screen display panel after turning the power on.
“PR
OTECT3” is not displayed, when removing the speaker connector (CN2021) and
turning the power on. Check that IC2002 pin 27, 32, 35 and 39 is short to GND.
Check and replace the speaker.
Exchange IC2002.
MOTHERBOARD board damaged. Exchange the complete MOTHERBOARD board.
Yes No No
Yes
Yes
SYSSET
2018/08/2821:56:45(GMT+09:00)