LG HB620 Service Manual

- 70 -
3. TECHNICAL BRIEF
3.10.7 Display
LCD module is connected to LCD F-PCB with 40 pin B TO B connector.
The LCD module is controlled by 16/18-bit EBI2 in MSM6280.
Audio Signal Processing & Interface
Audio signal processing is divided uplink path and downlink path. The uplink path amplifies the audio
signal from MIC and converts this analog signal to digital signal and then transmits it to DBB Chip
(MSM6280). This transmitted signal is reformed to fit in GSM & WCDMA frame format and delivered to
RF Chipset. The downlink path amplifies the signal from DBB chip (MSM6280) and outputs it to
receiver (or speaker).
The receive path can be directed to either one of two earphone amplifiers or the auxiliary output. The
outputs earphone1 (EAR1OP, EAR1ON) and auxiliary out (LINE_OP, LINE_ON) are differential
outputs. Earphone2 (HPH_L, HPH_R) is a single-ended output stage designed to drive a headset
speaker. The microphone interface consists of two differential microphone inputs, one differential
auxiliary input and a two-stage audio amplifier.
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
TCC_2.7V_EHI_LCD
4
40
5
6
7
8
9
25
26
27
28
29
3
30
31
32
33
34
35
36
37
38
39
10
11
12
13
14
15
16
17
18
19
2
20 21
22
23
24
CN103
AXK8L40125G
ENBY0020201
G1
G2
1
C409 0.1u
INSTPAR
PLW0501H-LF
D402
LCD_IF_MODE_0
FILTER_MM_SUB_LCD_CS_N
FILTER_MM_LCD_DATA[14]
FILTER_MM_LCD_DATA[12]
FILTER_MM_LCD_DATA[10]
FILTER_MM_LCD_DATA[8]
FILTER_MM_LCD_DATA[6]
FILTER_MM_LCD_DATA[4]
FILTER_MM_LCD_DATA[2]
FILTER_MM_LCD_DATA[0]
FILTER_MM_LCD_WE_N
MM_MAIN_LCD_CS_N
LCD_MAKER_ID
WLED_PWR
MAIN_LED4
MAIN_LED1
FILTER_LCD_RESET_N
MM_LCD_RD_N
FILTER_MM_LCD_ADS_N
MM_LCD_VSYNC
MAIN_LED2
MAIN_LED3
MAIN_LED5
FILTER_MM_LCD_DATA[11]
FILTER_MM_LCD_DATA[9]
FILTER_MM_LCD_DATA[7]
FILTER_MM_LCD_DATA[5]
FILTER_MM_LCD_DATA[3]
FILTER_MM_LCD_DATA[1]
FILTER_MM_LCD_DATA[15]
FILTER_MM_LCD_DATA[13]
Z3X-BOX.COM

LG HB620 Specifications

General

Network	GSM / HSPA
3G bands	HSDPA 2100
GPRS	Class 10
EDGE	Class 10
SIM	Mini-SIM
Call records	Yes
Internal	100 MB
Primary Camera	5 MP, AF
Loudspeaker	Yes
3.5mm jack	Yes
Messaging	SMS, MMS, Email
Browser	WAP 2.0/xHTML, HTML
Games	Yes + Downloadable
Java	Yes, MIDP 2.0
Battery	Removable Li-Ion 900 mAh battery
2G bands	GSM 900 / 1800 / 1900
Speed	HSPA
Type	TFT, 256K colors
Size	3.0 inches
Card slot	microSD (dedicated slot)
Phonebook	Yes
Alert types	Vibration, MP3 ringtones
WLAN	No
Bluetooth	v2.0, A2DP
GPS	No
Radio	FM radio
USB	v2.0
Stand-by	Up to 300 h
Colors	Black
Model	LG HB620