Checking Bluetooth Block | LG Electronics U250 instruction

4. TROUBLE SHOOTING

4.8 Checking Bluetooth Block

Test Point of the Bluetooth Block

TP2

			TP1. VREG_BT_2.85V
			TP2. VREG_MSMP_2.7V
TP1			TP2. VREG_MSMP_2.7V
TP1	TP3		TP3. TCXO_BT
	TP3		TP3. TCXO_BT
			TP4. BT ANT Output
			TP4. BT ANT Output

		TP4

Test Point of the Bluetooth Block

TP2

TP4

BLUETOOTH

		ACS2450HBAXX
	R118	NC1
	R118	FEED NC2
		FEED NC2
L126	0	ANT103
L126		ANT103
NA	NA	C169
M100	NA	C169
M100
LBRQ-2B43A
16

BT_CLK	C171	1000p
BT_CLK
	C172	1u
	C173	2.2u
R123
VREG_MSMP_2.7V
0
VREG_BT_2.85V	0.1uF	2.2u	100p
100p	0.1uF	2.2u	100p
C179	C177	C180	C178

9	CLK_REF			ANT			SBST		4
	CLK_REF			ANT			SBST		11
						SBCK			11
3	VCC_OUT					SBCK			12
3							SBDT		12
2							SBDT		5
2	VDD_INT		SYNC_DET_TX_EN						5
10	VDD_INT		SYNC_DET_TX_EN						13
10	VDD_MSM			RX_BB_TX_BB					13
14	VDD_MSM			RX_BB_TX_BB					7
14	VDD_BAT				XTAL_IN				7
	VDD_BAT				XTAL_IN					1000p	C176
	PGND4	PGND3	PGND2	PGND1						1000p	C176
	PGND4	PGND3	PGND2	PGND1	GND4 GND3	GND2	GND1
	20	19	18	17	15	8	6	1

TP1							TP3
							TP3

BT_SBST

BT_SBCK

BT_SBDT

BT_TX_RX_N

BT_DATA

TCXO_BT

Schematic of the Bluetooth Block

- 92 -

U250 specifications

The LG Electronics U250 is a distinguished device known for its cutting-edge features and innovative technologies within the mobile phone sector. Launched as part of LG's effort to cater to a growing demand for functional yet stylish smartphones, the U250 boasts an array of characteristics that appeal to a savvy clientele.

One of the primary features of the U250 is its impressive display. Sporting a vibrant screen that offers excellent color reproduction and clarity, it enhances the user experience for gaming and multimedia consumption. The responsive touchscreen interface allows for seamless navigation, making it user-friendly for all age groups.

The U250 is powered by a robust processor that ensures smooth performance, whether multitasking between applications or running demanding games. With ample RAM, it minimizes lag and enhances the overall operating experience, allowing users to switch effortlessly between tasks.

Photography enthusiasts will appreciate the U250's advanced camera system. It is equipped with a high-resolution primary camera that captures stunning images in various lighting conditions. The inclusion of features like autofocus and image stabilization significantly elevates the quality of photos and videos. Additionally, the front-facing camera is designed for high-quality selfies and video calls, ensuring that users can always stay connected.

The device supports a range of connectivity options, including 4G LTE, Bluetooth, and Wi-Fi, ensuring users can remain connected to the world around them. The integration of NFC technology also enables quick and convenient transactions, particularly useful in a cashless society.

Battery life is another standout characteristic of the U250. With a durable battery, it offers extended usage time, allowing users to go through their day without the constant worry of recharging. Coupled with fast-charging capabilities, it reduces downtime significantly.

The LG U250 runs on an intuitive operating system that provides easy access to a plethora of apps on the platform. Customization options are abundant, allowing users to tailor their device's appearance and functionality to suit their preferences.

In conclusion, the LG Electronics U250 combines striking design with versatile functionality, making it a formidable entry in the smartphone market. With its impressive display, powerful performance, advanced camera features, and strong battery life, the U250 is poised to meet the needs of modern users seeking both style and substance in a mobile device. Whether for work or leisure, this smartphone is designed to enhance everyday life.

LG Electronics U250 service manual Checking Bluetooth Block

Models: U250

4. TROUBLE SHOOTING

4.8 Checking Bluetooth Block

BLUETOOTH

LBRQ-2B43A

U250 specifications