Polaroid TLA-01901C - 19" LCD TV User manual

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TLA-01901C Service Manual

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Content
Chapter 1 - Specifications and Composition………………………………2
Chapter 2 - Brief introduction of the main
integrated circuit function……………………………………5
Chapter 3 - Analysis of the Signal process
Flowchart and Key Point Measure Data
Chapter 4 - Spare part list …………………………………………………38
Chapter 5 - The factory mode setting
and noticeable proceeding ……………………………………39
Chapter 6 - The flow of software update
Annex ： 1、 TLA-01901C Circuit diagram
2、 TLA-01901C exploded mechanical diagram
*Annex parts hasn’t been attached in this file. They will be provided
in separated files.
*The chassises of this LCD TV are called LS16 or L16W in this file.
LS16 and LS16W use the same TV resolution. The difference is the
connectors arrangement between these two chasises.
………………………25
and noticeable proceedin g……………………………………41

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Chapter 1 - Specifications and Composition
1、Models of the chassis
LS16：TBD
LS16W： TLA-01901C
2、Main Feature
RF Input ，including CATV Function(capable of compatible receiving
NTSC/ATSC/CLEAR-QAM ).
Capable of receiving the program of ATSC/NTSC within 54MHZ – 803MHz.
● AV Input
● HDMI Digital Signal Input
● VGA Input
● YPbPr Input
● Headphone Output
● SPDIF Digital Audio Output (Optional)
● 191 sets of programs presetting
In ATV mode, the TV can save 191 sets of program which fully prepared for the
richness programs in the future .
● Timer Function
Automatically on/off in certain preset time.
● Blue Background with Noise Silence (Optional)
The soft blue background will be displayed if there is no signal input in TV、
AV modes
● Automatic off if no signal input
LCD TV will go to the standby mode 15 or 5 minutes after there is no signal
input in TV mode.
● English / French/Spanish OSD menu
Simple graphic OSD menu makes the operation more convenient and more direct
viewing
● Power Energy Saving Function(power management mode)(only for LS16)
In PC mode, the LCD TV will automatically power off within 30 seconds and
enter into the Power Energy Saving Mode if there is no VGA signal input. It will
automatically exit from the Power Energy Saving Mode and work again when it
received a valid VGA signal or press any button on the panel/remote control.
● Plug and Play
It is no need to equip any installation software when the product is used as
computer terminal display equipment.
(In order to obtain a good image quality, perhaps,some minor adjustment should
be done with the PC display setting or TV pc set up. )
● Legerity , Convenience and Low power consumption
3、Unit circuit modules：
LS16 and LS16W chassis LCD TV is mainly composed of regulator IC,RF IC, video
processor IC ,power amplify IC, analog video IC, system control IC and key control

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IC. See the IC frame as below:
4、PCB assembly introduction：
LS16 and LS16W LCD TV is mainly composed of AV Board , Remote Receiver Board,
Local Key Board and Main Board. The under sheet is the function introduction of every
Main Board MSD116
MSD809
Power Board LCD Panel K Panel
IR Panel
Speake
r
MST3383
TL062
TDA1517
S-FLASH
TUNER AV HDMIPCYPbPr
+5V +5V
+12V
+12V
+5V
+12V
IF-D
CVBS
L V D S
TS
[
0…7
]
HD
[
0…7
]
SIF
AUDIO

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PCD Assembly:
NO. Parts Function Description
1
Main Board
module
Main Board module is the core of LCD TV signal processing.
Under the control of the System Control Circuit, It undertakes the
task of converting the external input signal into the unified digital
signal that the LCD screen could identify 。After RF signal
processed by tuner, It was sent to the main chip (analog signal was
sent to MSD116 for processing ,and digital signal was sent to
MSD809 for decoding first and then to MSD116 for processing ),
then the main chip(MSD116 ) produce LVDS signal displayed on
the screen .In addition, signals input from VGA、AV、SVIDEO and
YPbPr would directly enter into MSD116 for processing, format
transformation and on screen display. HDMI signal was sent to
MST3383 for processing first and then transmitted to MSD116 for
processing, format transformation and on screen display. And there
is a headphone output interface near the tuner. For LS16 only, it
has a digital audio output interface(SPDIF).
3 Remote
Control
Receiver
Assembly
It is composite of one light indicator and one remote control
receiver, which enable users operate the TV conveniently and
know its current working status simply with a remote control.
4
Built-in
Power Board
Assembly
It can transform AC power into DC for ICs including+12V，+5V and
ADJ for switching the backlight of LCD on or off and adjusting the
brightness.
5 Key Board
Assembly
It consists of 7 function buttons by which users can operate the TV
freely.
6 Panel
Assembly
The LCD screen is used to display the image after the image signal
has been processed by the main board.

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Chapter 2 - Brief introduction of the main integrated circuit
function
1、LS16 and LS16W Chassis Main ICs and function：
Main Board
Number Position Part Number Main function
1 U12,U6 24LC02 EEPROM
2 U23 24LC512 EEPROM
3 U7 MSD809 Demodulator
4 U9 MST3383AMCK-LF-170 HDMI Decoder
5 U8 DTVS205CH201A Tuner
6 U22 MSD116L Video and audio processor.
7 U24 M25P16-VMN6P/
S25FL016A0LMFI013
Flash for code storage
8 U28,U29,U30 IS42S16400D-6TL/
W9864G6GH-6/
K4S641632K-UC60
SDRAM
9 U31 TDA1517P Audio amplifier
10 U32 TL062CD Integration amplifier
2、LS16 and LS16W Chassis IC function.
2.1 TUNER(DTVS205CH201A)
GENERAL DESCRIPTION:
Receiving System: ATSC/NTSC system
Intermediate Frequency: Digital(center): 44MHz
Analog(P-carrier):45.75MHz
Input Impedance: 75Ω,Unbalanced
IF Output Impedance: 10Ω,Balanced
Band Change-Over System: PLL system
Tuning System: PLL system
Internal RF AGC function:
Built in wideband AGC detector with 6 programmable take-over points
Narrow band output to be filtering by a 5.6MHz SAW filter
Built in the additional IF amplifier with AGC circuit
Reference Frequency The X-tal the RF block’s PLL:4MHz
Control Data Bus: I²C(BUS VOLTAGE:3.3V)
Control Data Format: Refer to 6 Section
DTVS205CH201ABLOCK DIAGRAM：

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PIN FUNCTION DESCRIPTION：
PIN PIN NAME DESCRIPTION
1 NC not connected
2 NC not connected
3 NC not connected
4 NC not connected
5 NC not connected
6 NC not connected
7 RF AGC TP
8 NC not connected
9 VT 30V
10 IF OUT (+) digital IF
11 IF OUT (-) digital IF
12 IF AGC
EXTERNAL
13 TP(IF)
14 CLOCK
15 DATA
16 GND
17 5V
18 NC
19 AFT analog demod
20 SIF analog demod
21 CVBS analog demod

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2.2 MSD116L
GENERAL DESCRIPTION:
The MSD116L is a highly integrated SOC for LCD/PDP DTV applications with
resolutions up to SXGA/WXGA+.It is configured with an integrated triple-ADC/PLL,
a multi-standard TV video and audio decoder, a DTV video and audio decoder, a
video de-interlacer, a scaling engine, the MStarACE-3 color engine, a graphics engine,
an 8-bit MCU and a built-in output panel interface. The built-in DTV decoder
including transport stream de-multiplexer and MPEG-2 AV decoder are designed to
support ATSC HD/SDTV program while handling ATSC CC and EPG. For analog TV,
the MSD116L receives NTSC/PAL/SECAM CVBS/S-Video and component video
signals from various analog graphic & video sources. To further reduce system costs,
the MSD116L also integrates intelligent power management control capability for
green-mode requirements and spread-spectrum support for EMI management.
FEATURES
●Twin-turbo 8051 Micro-controller
●Transport Stream De-multiplexer
●MPEG-2 A/V Decoder
●NTSC/PAL/SECAM Video Decoder
●Multi-Standard TV Sound Processor
●Digital Audio Interface
I
2S digital audio input & output
S/PDIF digital audio input & output
●Analog RGB Compliant Input Ports
●Auto-Configuration/Auto-Detection
Two analog ports support up to 135MHz
Supports PC RGB input up to SXGA@75Hz
Supports HDTV RGB/YPbPr/YCbCr
Supports Composite Sync and SOG (Sync-on-Green) separator
Automatic color calibration
●High-Performance Scaling Engine
●Video Processing & Conversion
●Output Interface
Supports up to 8-bit dual LVDS SXGA/WXGA+ panel interface
Supports 2 data output formats: Thine & TI data mappings
Compatible with TIA/EIA
With 6/8 bits options
Spread spectrum output frequency for EMI suppression
Supports flexible spread spectrum frequency
●2D Graphics Engine
●Digital PWM Controller
●Miscellaneous

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SDRAM controller to support up to 48-bit data bus
Supports serial flash with up to 2M address
Two I2C interfaces in master/slave mode
One IR receiver input with power-down wakeup
256-LQFP package
Operating at 1.8V (core) and 3.3V (I/O and analog)
PIN FUNCTION DESCRIPTION：
Analog Interface
Pin Name Pin Type Function Pin
VCLAMP CVBS/YC Mode Clamp Voltage Bypass 20
REFM Internal ADC Bottom De-coupling Pin 18
REFP Internal ADC Top De-coupling Pin 19
SOGIN1 Analog Input Sync-on-Green slicer input from
channel 1
2
BINP Analog Input Analog B Input of VGA 1
GINP Analog Input Analog G Input of VGA 3
RINP Analog Input Analog R Input of VGA 4
PBINP Analog Input Analog Pb Input 11
VCOMB Analog Input Common Negative Input for
B-component ADC
12
SOGIN0 Analog Input Sync-on-Green slicer input from
channel 0
13
VCOMG Analog Input Common Negative Input for
G-component ADC
15
YINP Analog Input Analog Y Input 14
VCOMR Analog Input Common Negative Input for
R-component ADC
17
PRINP Analog Input Analog Pr Input 16
C0INP Analog Input Analog Chroma Input for TV S-Video0 23
YS0INP Analog Input Analog Luma Input of TV S-Video0 24
C1INP Analog Input Analog Chroma Input for TV S-Video1
/ Analog Composite Input of TV CVBS4
25
YS1INP Analog Input Analog Luma Input of TV S-Video0 /
Analog Composite Input of TV CVBS3
26
VCOMY Analog Input Common Negative Input for
Y-component ADC
27
CVBSOUT Analog
Output
CVBS Output buffered from CVBS input 32
CVBS0 Analog Input Analog Composite Input for TV CVBS0 31
CVBS1 Analog Input Analog Composite Input for TV CVBS1 30
CVBS2 Analog Input Analog Composite Input for TV CVBS2 29
CVBS3 Analog Input Analog Composite Input for TV CVBS3 28
DREXT Analog Input Reference Current Generator, 820 170

10
ohm to Ground
HSYNC0 Schmitt
Trigger
Input w/
5V-tolerant
HSYNC / Composite Sync for VGA Input
from channel 0
9
VSYNC0 Schmitt
Trigger
Input w/
5V-tolerant
VSYNC for VGA Input from channel 1 10
HSYNC1 Schmitt
Trigger
Input w/
5V-tolerant
HSYNC / Composite Sync for VGA Input
from channel 1
8
VSYNC1 Schmitt Trigger
Input
w/ 5V-tolerant
VSYNC for VGA Input from channel 1
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Digital Panel Output Interface
LVA0M Output LVDS A-Link Channel 0 Negative Data
Output 186
LVA0P Output LVDS A-Link Channel 0 Positive Data
Output 185
LVA1M Output LVDS A-Link Channel 1 Negative Data
Output 184
LVA1P Output LVDS A-Link Channel 1 Positive Data
Output 183
LVA2M Output LVDS A-Link Channel 2 Negative Data
Output 182
LVA2P Output LVDS A-Link Channel 2 Positive Data
Output 181
LVACKM Output LVDS A-Link Negative Clock Output 180
LVACKP Output LVDS A-Link Positive Clock Output 179
LVA3M Output LVDS A-Link Channel 3 Negative Data
Output 178
LVA3P Output LVDS A-Link Channel 3 Positive Data
Output 177
LVB0M Output LVDS B-Link Channel 0 Negative Data
Output 199
LVB0P Output LVDS B-Link Channel 0 Positive Data
Output 198
LVB1M Output LVDS B-Link Channel 1 Negative Data
Output 197
LVB1P Output LVDS B-Link Channel 1 Positive Data
Output 196