Saturday, September 17, 2016

LG CM9550 SMPS and Power amplifier circuit diagram LGCM9550 LGNS9550F/W Mini Hi-Fi System

AMPLIFIER
Stereo mode 470 W x 2 (THD 20 %)
Surround mode
Front 470 W x 2 (THD 20 %)
Surround 470 W x 2 (THD 20 %)
Subwoofer 460 W x 2 (THD 20 %)
FRONT SPEAKER
Type 2 Way 2 Speaker
Impedance 6 Ω
Rated Input Power 470 W
Max. Input power 940 W
SURROUND SPEAKER
Type 1 Way 1 speaker
Impedance 6 Ω
Rated Input Power 470 W
Max. Input power 940 W
Net Dimensions (W x H x D) (425 x 505 x 351) mm
Net Weight 13.2 kg
SUBWOOFER
Type 1 Way 1 speaker
Impedance 6 Ω
Rated Input Power 460 W
Max. Input power 920 W
Net Dimensions (W x H x D) (425 x 505 x 354) mm
Net Weight 12.7 kg
HIDDEN KEY MODE
Push both Front key and RCU key to activate it for 5 seconds.
1. Disc Lock On/Off (CD Function Only Active)
Front Key : STOP
RCU Key : STOP
2. Check Version and Option code
Front Key : STOP
RCU Key : PLAY/PAUSE
You can change [Audio MCU Version <-> CD Controller Version <-> EEPROM Option] by SKIP+/-.
3. Clear EEPROM
Front Key : STOP
RCU Key : SKIP-
4. Edit EEPROM
Front Key : STOP
RCU Key : SKIP+
You can change the digit of option by SKIP+/-.
You can edit 0~f by REPEAT or PLAY/PAUSE key.
5. Bluetooth DUT
Front Key : STOP
RCU Key : PROGRAM
Bluetooth model only
6. Power Disc Lock On/Off (CD Function Only Active)
Front Key : STOP
RCU Key : EQ
7. Amp Clip On/Off
Front Key : STOP
RCU Key : Mute
Amp Clip Mode Change (Amp Clip On --> Amp Clip Off --> Level Down display).
SERVICE INFORMATION FOR EEPROM
Main amplifier schematic
Servo
SMPS (Power supply)
PROGRAM DOWNLOAD & UPDATE
AUDIO PROGRAM
Download program file name must be MICOM_CM9550_YYMMDDX.HEX
If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Downloading file proceeds in the same way at USB1 function and USB2 function.
Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed.
CD PROGRAM
Download program file name must be HG580_CM9550_YYMMDDX.bin
If security program (Water Wall) is activated on your PC, you must save the file to the USB storage device and disable the security software, then download the file to your set. Downloading file proceeds in the same way at USB1 function and USB2 function.
Caution: When downloading the file, you should neither unplug the USB device, change to the other function, nor power off the device. USB device must be unplugged when the downloading process is completed.