How to upgrade the firmware_Circuit Diagram_LG-LAB5901RN - Car Audio System_How to connect the Power Supply
GENERAL
Output Power 53 W x 4 CH (Max.)
Power Source DC 12 V
Speaker impedance 4 Ω
Ground System Negative
Dimensions (W x H x D) 188 x 100 x 186 mm
Net Weight 1.59 kg.
Output Power 53 W x 4 CH (Max.)
Power Source DC 12 V
Speaker impedance 4 Ω
Ground System Negative
Dimensions (W x H x D) 188 x 100 x 186 mm
Net Weight 1.59 kg.
TUNER: FM
Frequency Range 87.5 to 107.9 or 87.5 to 108 MHz
S/N Ratio 55 dB
Distortion 0.7 %
Usable Sensitivity 12 dBµV
AM (MW)
Frequency Range 520 to 1720 or 522 to 1620 kHz
S/N Ratio 50 dB
Distortion 1.0 %
Usable Sensitivity 28 dBµV
Frequency Range 87.5 to 107.9 or 87.5 to 108 MHz
S/N Ratio 55 dB
Distortion 0.7 %
Usable Sensitivity 12 dBµV
AM (MW)
Frequency Range 520 to 1720 or 522 to 1620 kHz
S/N Ratio 50 dB
Distortion 1.0 %
Usable Sensitivity 28 dBµV
HOW TO CONNECT AUDIO SET TO POWER
SUPPLY
It is sufficient only to supply
power for upgrade.
• Shown from the right figure, connect yellow line (Battery) and red line (Ignition) to plus and minus terminal respectively.
• Jack is connected to the audio set via its shapes matched each other.
• We need power supply for operation of audio set (Voltage : 12~15 V Current : Over 2 A)
Before connection between set and power supply, adjust voltage level to 15 V typically (It is okay up to 12 V.) Power Supply has a variety of shapes and capacity of voltage and current. At first check these things.
• Shown from the right figure, connect yellow line (Battery) and red line (Ignition) to plus and minus terminal respectively.
• Jack is connected to the audio set via its shapes matched each other.
• We need power supply for operation of audio set (Voltage : 12~15 V Current : Over 2 A)
Before connection between set and power supply, adjust voltage level to 15 V typically (It is okay up to 12 V.) Power Supply has a variety of shapes and capacity of voltage and current. At first check these things.
FIRMWARE UPGRADE METHOD [MAIN/CD
FIRMWARE UPGRADE]
Confirmation of version information
> Change the Source of audio set to tuner. (Default: tuner)
> Turn power off using power key.
> Press power key for 5 sec. (After power on, continue pressing)
> After 5 sec, beep sound rings two times. Then version information would show up at display.
> In order to check version of MAIN/CD system, Press band key.
> With beep Sound version of system for main, CD is displayed in sequence.
> Change the Source of audio set to tuner. (Default: tuner)
> Turn power off using power key.
> Press power key for 5 sec. (After power on, continue pressing)
> After 5 sec, beep sound rings two times. Then version information would show up at display.
> In order to check version of MAIN/CD system, Press band key.
> With beep Sound version of system for main, CD is displayed in sequence.
Upgrade Program reading
Insert update CD in ACC on state and then [READING-> FILE CHK-> DOWNLORD?] is displayed in order
Insert update CD in ACC on state and then [READING-> FILE CHK-> DOWNLORD?] is displayed in order
Upgrade start
In order to start upgrade, Press SCAN key (No2.) long (more then 2 sec) until “CHECK CD” Display on the LCD.
In order to start upgrade, Press SCAN key (No2.) long (more then 2 sec) until “CHECK CD” Display on the LCD.
Upgrade progress display
Upgrade is in progress now. [ CHECK CD > ERASE > WRITE > I-VRF > D-VRF ]
Upgrade is in progress now. [ CHECK CD > ERASE > WRITE > I-VRF > D-VRF ]
Upgrade Completion
When Upgrade finished, the display shows up “DOWN OK”. After a while, the audio set is reset automatically.
When Upgrade finished, the display shows up “DOWN OK”. After a while, the audio set is reset automatically.
Caution: If power is off on the way of
upgrading firmware, the set can’t be recovered.
Therefore pay lots of attention for power not to be off.
USB FIRMWARE UPGRADE
Confirmation of version information
> Change the source of audio set to tuner. (Default : tuner)
> Turn power off using power key.
> Press power key for 5 secs. (After power is on, continue pressing)
> After 5 secs, beep sound rings two times. Then the version information would show up at display.
In order to check version of USB system, press band key. With beep sound, version of systems for main, CD and USB is displayed in sequence.
> Change the source of audio set to tuner. (Default : tuner)
> Turn power off using power key.
> Press power key for 5 secs. (After power is on, continue pressing)
> After 5 secs, beep sound rings two times. Then the version information would show up at display.
In order to check version of USB system, press band key. With beep sound, version of systems for main, CD and USB is displayed in sequence.
Upgrade Preparation
At first check that audio set is in tuner mode. With power key, turn it off. Make it sure to insert USB device which has upgrade file.
At first check that audio set is in tuner mode. With power key, turn it off. Make it sure to insert USB device which has upgrade file.
Upgrade start
Press SRC key for 5 secs. After power is on, continue pressing. And then the audio set is changed to USB upgrade mode.
Press SRC key for 5 secs. After power is on, continue pressing. And then the audio set is changed to USB upgrade mode.
Upgrade progress display
Upgrade is in progress now. It takes about 10 secs.
Upgrade is in progress now. It takes about 10 secs.
Upgrade completion
Upgrade finished, the right display shows up. After a while, the audio set is reset automatically.
Caution: If power is off on the way of upgrading firmware, the set can’t be recovered. Therefore pay lots of attention for power not to be off.
Upgrade finished, the right display shows up. After a while, the audio set is reset automatically.
Caution: If power is off on the way of upgrading firmware, the set can’t be recovered. Therefore pay lots of attention for power not to be off.
Thermal protection circuit
A built-in thermal protection circuit (TSD:Thermal shut down) prevents thermal damage to the IC. All outputs except VDD (pin14) and FREG (pin2&3) are switched off when the circuit operates; revert to the original state when the temperature drops to a certain level.
A built-in thermal protection circuit (TSD:Thermal shut down) prevents thermal damage to the IC. All outputs except VDD (pin14) and FREG (pin2&3) are switched off when the circuit operates; revert to the original state when the temperature drops to a certain level.
Overvoltage protection circuit
The overvoltage protection circuit (surge protector) turns off all outputs without Vdd, when VB voltage is more than about 21V. And the overvoltage protection circuit (surge protector) turns off Vdd output with other all outputs, when VB voltage is more than about 26V. When the overvoltage protection operates on VB>=18V condition, the stand by current increases.
The overvoltage protection circuit (surge protector) turns off all outputs without Vdd, when VB voltage is more than about 21V. And the overvoltage protection circuit (surge protector) turns off Vdd output with other all outputs, when VB voltage is more than about 26V. When the overvoltage protection operates on VB>=18V condition, the stand by current increases.
Over current protection circuit
FREG_B (pin2), ILMOUT (pin4), CDOUT (pin6), DSPOUT (pin7), AUDIOOUT (pin10), EXITOUT (pin12), VDDOUT (pin14) output circuits are built-in over current protection circuit based on the respective output current. These over current protection circuits limit the current with a curve shape of “7” in the voltage-current graph. This prevents IC destruction due to over current.
FREG_B (pin2), ILMOUT (pin4), CDOUT (pin6), DSPOUT (pin7), AUDIOOUT (pin10), EXITOUT (pin12), VDDOUT (pin14) output circuits are built-in over current protection circuit based on the respective output current. These over current protection circuits limit the current with a curve shape of “7” in the voltage-current graph. This prevents IC destruction due to over current.
Before exchange power amp IC(TB2946)
for no audio problem, you have to check below list.
Check VCC (pin 20,6) & GND
Check input pin 11,12,14,15
Check Standby, pin 4 : Follow the below list.
Check VCC (pin 20,6) & GND
Check input pin 11,12,14,15
Check Standby, pin 4 : Follow the below list.
Check Mute function, pin 22 :
Follow the below list.
Check Ripple pin 10. : Normally
it is high (about 10 V)
Re-soldering all the pin of IC. :
Prevent crack of solder line.
CIRCUIT DIAGRAMS [CLICK ON THE DIAGRAMS TO ZOOM IN]
FRONT PANEL
CDP-1
CDP-2
MAIN BOARD
