DOWNLOAD Sharp 32LF-92H (serv.man2) Service Manual ↓ Size: 1.78 MB | Pages: 76 in PDF or view online for FREE

Model
32LF-92H (serv.man2)
Pages
76
Size
1.78 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR
File
32lf-92h-sm2.pdf
Date

Sharp 32LF-92H (serv.man2) Service Manual ▷ View online

9
AK - 45
CHASSIS
• Up to 16 Colours per DRCS Character 
• One out of Eight Colours for Foreground and Background Colours for 1-bit DRCS and ROM 
Characters 
• Shadowing 
• Contrast Reduction 
• Pixel by Pixel Shiftable Cursor With up to 4 Different Colours 
• Support of Progressive Scan and 100 Hz. 
• 3 X 4Bits RGB-DACs On-Chip 
• Free Programmable Pixel Clock from 10 MHz to 32MHz 
• Pixel Clock Independent from CPU Clock 
• Multinorm H/V-Display Synchronization in Master or Slave Mode 
 
10.6.Acquisition Features 
• Multi-standard Digital Data Slicer 
• Parallel Multi-norm Slicing (TTX, VPS, WSS, CC, G+) 
• Four Different Framing Codes Available 
• Data Caption only limited by available Memory 
• Programmable VBI-buffer 
• Full Channel Data Slicing Supported 
• Fully Digital Signal Processing 
• Noise Measurement and Controlled Noise Compensation 
• Attenuation Measurement and Compensation 
• Group Delay Measurement and Compensation 
• Exact Decoding of Echo Disturbed Signals 
 
10.7.Ports 
• One 8-bit I/O-port with open drain output and optional I
2
C Bus emulation support (Port0) 
• Two 8-bit multifunction I/O-ports (Port1, Port3) 
• One 4-bit port working as digital or analogue inputs for the ADC (Port2) 
• One 2-bit I/O port with secondary function (P4.2, 4.3, 4.7) 
• One 4-bit I/O-port with secondary function (P4.0, 4.1, 4.4) (Not available in P-SDIP 52) 
 
11.CLASS AB STEREO HEADPHONE DRIVER TDA1308 
The TDA1308 is an integrated class AB stereo headphone driver contained in a DIP8 plastic package. 
The device is fabricated in a 1 mm CMOS process and has been primarily developed for portable digital 
audio applications. 
 
12.SAW FILTERS  
K3953M: 
Standard 
B/G, D/K, I, L/L’
 
Features 
TV IF filter with Nyquist slopes at 33,90 MHz and 38,90 MHz 
Constant group delay 
Suitable for CENELEC EN 55020 
Terminals 
Tinned CuFe alloy 
Pin configuration 
1 Input 
2 Input - ground 
3 Chip carrier - ground 
4 Output 
5 Output 
 
K3958M: 
Standard 
B/G, D/K, I, L/L’ 
Features 
TV IF filter with Nyquist slopes at 33.90 MHz and 38.90 MHz 
Constant group delay 
Terminal and Pin configuration are the same with 
K3953M 
10
AK - 45
CHASSIS
K9356M: 
Standard 
B/G, D/K, I, L 
Features 
TV IF audio filter with pass band for sound carriers at 32,40 MHz (D/K, L), 32,90 MHz (I) and 33,40 MHz 
(B/G) 
Terminal and Pin configuration are the same with 
K3953M
 
 
K9656M: 
Standard 
B/G, D/K, I, L/L’ 
Features 
TV IF audio filter with two channels 
Channel 1 (L’) with one pass band for sound carriers at 40,40 MHz (L’) and 39,75 MHz (L’- NICAM) 
Channel 2 (B/G, D/K, L, I) with one pass band for sound carriers between 32,35 MHz and 33,40 MHz 
Terminal and Pin configuration are the same with 
K3953M
 
 
13.IC DESCRIPTIONS 
LM317T TDA1308T 
MSP3410G VDP3130Y 
TEA6415 STV9379FA 
TDA7269A LM7805/LM7808 
24C08 SDA55XX 
MC44608 TCET1102G 
TDA9885T 
 
13.1.LM317T 
13.1.1.Description 
The LM317T is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1.5 
amps over an output range of 1.25 to 37 volts. This voltage regulator is exceptionally easy to use and 
requires only two external resistors to set the output voltage. Further, it employs internal current limiting, 
thermal shutdown and safe area compensation, making it essentially blow–out proof. The LM317 
serves a wide variety of applications including local, on card regulation. This device can also be used to 
make a programmable output regulator, or by connecting a fixed resistor between the adjustment and 
output, the LM317 can be used as a precision current regulator. 
13.1.2.Features 
• Output Current in Excess of 1.5 A 
• Output Adjustable between 1.2 V and 37 V 
• Internal Thermal Overload Protection 
• Internal Short Circuit Current Limiting Constant with Temperature 
• Output Transistor Safe–Area Compensation 
• Floating Operation for High Voltage Applications 
• Available in Surface Mount D
2
PAK, and Standard 3–Lead Transistor Package 
• Eliminates Stocking many Fixed Voltages 
 
13.2.TDA1308T 
13.2.1.General Description 
The TDA1308 is an integrated class AB stereo headphone driver contained in an SO8 or a DIP8 plastic 
package. The device is fabricated in a 1 mm CMOS process and has been primarily developed for 
portable digital audio applications. It gets its input from two analog audio outputs (DACA_L and 
DACA_R) of MSP 34x0G. The gain of the output is adjustable by the feedback resistor between the 
inputs and outputs. 
13.2.2.Features 
• 
Wide temperature range 
• 
No switch ON/OFF clicks 
• 
Excellent power supply ripple rejection 
11
AK - 45
CHASSIS
So
ur
c
e
 Se
le
ct
Loud-
SCART1
SCART2
SCART1
SCART2
SCART4
SCART3
MONO
De-
modulator
Headphone
Headphone
I
2
S
Sound
Processing
speaker
Sound
Processing
DAC
DAC
ADC
Loud-
DAC
DAC
ADC
Subwoofer
SCART
DSP 
Input 
Select
Pre-
processing
SCART 
Output 
Select
Prescale
Prescale
I
2
S1
I
2
S2
Sound IF1
Sound IF2
speaker
• Low power consumption 
• Short-circuit resistant 
• High performance 
• high signal-to-noise ratio 
• High slew rate 
• Low distortion 
• Large output voltage swing. 
 
13.2.3.Pinning 
 
SYMBOL PIN 
DESCRIPTION 
OUTA 1 
Output 
INA(neg) 
Inverting input A 
INA(pos) 
Non-inverting input A 
V
SS
 4 
Negative 
supply 
INB(pos) 
Non-inverting input B 
INB(neg) 
Inverting input B 
OUTB 7 
Output 
V
DD
 8 
Positive 
supply 
 
13.3.MSP34X0G (MSP3410G) 
13.3.1.Description 
The MSP 34x0G family of single-chip Multi standard Sound Processors covers the sound processing of 
all analog TV-Standards worldwide, as well as the NICAM digital sound standards. The full TV sound 
processing, starting with analog sound IF signal-in, down to processed analog AF-out, is performed on 
a single chip. Figure shows a simplified functional block diagram of the MSP 34x0G. 
evaluated internally with subsequent switching between mono/stereo/bilingual; no I
2
C interaction is 
necessary (Automatic Sound Selection). 
 
This new generation of TV sound processing ICs now includes versions for processing the multi 
channel television sound (MTS) signal conforming to the standard recommended by the Broadcast 
Television Systems Committee (BTSC). The DBX noise reduction, or alternatively, MICRONAS Noise 
Reduction (MNR) is performed alignment free. Other processed standards are the Japanese FM-FM 
multiplex standard (EIA-J) and the FM Stereo Radio standard. Current ICs have to perform adjustment 
procedures in order to achieve good stereo separation for BTSC and EIA-J. The MSP 34x0G has 
optimum stereo performance without any adjustments. 
All MSP 34x0G versions are pin and software downward compatible to the MSP34x0D. The 
MSP34x0G further simplifies controlling software. Standard selection requires a single I
2
C transmission 
only. 
The MSP 34x0G has built-in automatic functions: The IC is able to detect the actual sound standard 
automatically (Automatic Standard Detection). Furthermore, pilot levels and identification signals can be 
12
AK - 45
CHASSIS
13.3.2.Features 
Standard Selection with single I
2
C transmission  
Automatic Standard Detection of terrestrial TV standards  
Automatic Sound Selection (mono/stereo/bilingual), new registers MODUS, STATUS  
Two selectable sound IF (SIF) inputs  
Automatic Carrier Mute function 
Interrupt output programmable (indicating status change)  
Loudspeaker / Headphone channel with volume, balance, bass, treble, loudness  
AVC: Automatic Volume Correction  
Subwoofer output with programmable low-pass and complementary high-pass filter  
5-band graphic equalizer for loudspeaker channel  
Spatial effect for loudspeaker channel 
Four Stereo SCART (line) inputs, one Mono input; two Stereo SCART outputs  
Complete SCART in/out switching matrix  
Two I
2
S inputs; one I
2
S output  
Dolby Pro Logic with DPL 351xA coprocessor 
All analog FM-Stereo A2 and satellite standards; AM-SECAM L standard 
Simultaneous demodulation of (very) high-deviation FM-Mono and NICAM  
Adaptive deemphasis for satellite (Wegener-Panda, acc. to ASTRA specification)  
ASTRA Digital Radio (ADR) together with DRP 3510A  
All NICAM standards 
Korean FM-Stereo A2 standard 
13.3.3.Pin connections 
NC = not connected; leave vacant 
LV = if not used, leave vacant 
X = obligatory; connect as described in circuit diagram 
DVSS: if not used, connect to DVSS 
AHVSS: connect to AHVSS 
 
Pin No. 
Pin Name 
Type 
Connection 
(if not used)
 
Short Description 
PLCC 
68-pin
 
PSDIP 
64-pin
 
PSDIP 
52-pin
 
PQFP 
80-pin
 
PLQFP 
64-pin
 
 
 
 
 
1 16 
14 9 8  ADR_WS  OUT 
LV 
ADR 
word 
strobe 
2 - -  - -  NC 
 
LV 
Not 
connected 
3 15 
13 8 7  ADR_DA  OUT 
LV 
ADR 
Data 
Output 
4 14 
12 7 6  I2S_DA_IN1 
 
IN  LV 
I
2
S1 data input 
5 13 
11 6 5  I2S_DA_OUT 
 
OUT 
LV 
I
2
S data output 
6 12 
10 5 4  I2S_WS  IN/OUT 
LV 
I
2
S word strobe 
7 11 
9 4 
3 I2S_CL 
  IN/OUT 
LV 
I
2
S clock 
8 10 
8 3 
2 I2C_DA  IN/OUT 
I
2
C data 
9  9 7  2 1  I2C_CL 
IN/OUT 
I
2
C data 
10 8 -  1 64 NC 
 
LV 
Not 
connected 
11 7  6 
80 63  STANDBYQ 
IN  X 
Stand-by 
(low-active) 
12 6  5 
79 62  ADR_SEL  IN  X 
I
2
C bus address select 
13 5  4 
78 61  D_CTR_I/O_0 
IN/OUT 
LV 
D_CTR_I/O_0 
14 4  3 
77 60  D_CTR_I/O_1 
IN/OUT 
LV 
D_CTR_I/O_1 
15 3  - 
76 59  NC 
 
LV 
Not 
connected 
16 2  - 
75 58  NC 
 
LV 
Not 
connected 
17 
- -  - -  NC 
 
LV 
Not 
connected 
18 1  2 
74 57  AUD_CL_OUT 
OUT LV 
Audio clock output  
(18.432 MHz) 
19  64 1 
73 56  TP 
 
LV 
Test 
pin 
20  63 52  72 55  XTAL_OUT OUT X 
Crystal 
oscillator 
21  62 51  71 54  XTAL_IN 
IN  X 
Crystal 
oscillator 
22  61 50  70 53  TESTEN 
IN  X 
Test 
pin 
23  60 49  69 52  ANA_IN2+  IN 
AVSS via 56 
pF/LV 
IF Input 2 (can be left 
vacant, only if IF input 1 is 
also not in use) 
24  59 48  68 51  ANA_IN- 
IN 
AVSS via 56 
pF/LV 
IF common (can be left 
vacant, only if IF input 1 is 
also not in use) 
25  58 47  67 50  ANA_IN1+  IN  LV 
IF 
input 
26 
57 
46 
66 
49 
AVSUP 
 
Analog power supply 5v 
65 
AVSUP 
 
Analog power supply 5v 
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