LG
CM8340, LG CMS8440F Mini Hi-Fi System Firmware update procedure – power supply
regulator schematic
Total 1,900 W
Streo mode 380 W x 4
Sub-woofer 380 W
Streo mode 380 W x 4
Sub-woofer 380 W
FRONT
SPEAKER
Type 2 Way 2 Speaker
Impedance 6 Ω
Rated Input Power 380 W
Max. Input power 760 W
Type 2 Way 2 Speaker
Impedance 6 Ω
Rated Input Power 380 W
Max. Input power 760 W
SURROUND
SPEAKER
Type 1 Way 1 speaker
Impedance 6 Ω
Rated Input Power 380 W
Max. Input power 760 W
Net Dimensions (W x H x D) (335 x 445 x 300) mm
Net Weight 8.8 kg
Type 1 Way 1 speaker
Impedance 6 Ω
Rated Input Power 380 W
Max. Input power 760 W
Net Dimensions (W x H x D) (335 x 445 x 300) mm
Net Weight 8.8 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)
SMPS and Power Amplifier circuit diagram [Click on the pictures to zoom in]
AMP & CD-DSP schematic
PROGRAM DOWNLOAD & UPDATE
AUDIO PROGRAM
Download program file name must be MICOM_CM8540_1311010_0x4D3F.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 HG480_CM8540_1401231.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.
DEMO PROGRAM
Download program file name must be DEMO_DAT.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.
Q PROGRAM
Download program file name must be EQ_PRG_CM8340_201401140_59CC.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.
