Sharp LC-19D1E/S-BK/WH, Руководство по обслуживанию

Страница: 73 / 160

LC-19D1E/S-BK/WH
5 – 3
11 IC205
Voltage Regula-
tor: 1.0V-REG
VHIMM3271AN-1Y
This IC is a regulator IC for super-low current consumption that uses
CMOS process. In this Model, this IC generates 1.0V-regurator.
AV
12 IC206 3.3V-REG VHIPQ1M335M-1Y
This IC can be used for the power regulator circuit up to 0.15A in cur-
rent capacity with the direct current stabilizing supply element that has
the ON/OFF function, the overcurrent protection function, and the over-
heating protection function of the output voltage. In this model, this IC
generates 3.3V-regurator.
AV
13 IC208
Series Regulator:
2.5V-REG
VHIBH25FB1G-1Y
This IC is a series regulator of the type with 150mA shutdown. The
overcurrent protection circuit by the output short-circuit etc. and the
overheating protection circuits by the overload etc. are built into this IC.
In this model, this IC generates 2.5V-regurator.
AV
[INV/POWER UNIT]
1 IC7501 INV-CTL BD9883FV BD9883FV is IC for DC-AC inverter control. POW
[DIGITAL UNIT]
1 IC4001
DIGITAL-PRO-
CESSOR
RH-IXB243WJZZQ
This is a video/audio signal processing IC (Digital Processor) (STi5105)
for digital tuner, which has been manufactured by STMicroelectronics,
and incorporates a CPU. In this equipment, it implements GUI process-
ing and video/audio processing for digital tuner, negotiation processing
with CI-CARD, etc.
D1
2 IC4201
256Mb-DDR
SDRAM
RH-IXB765WJZZQ
This is a 256Mb DDR SDRAM IC. This IC features a double-data rate
dynamic random-
access memory containing 16M-bits columns by 16 bits.
In this model, it is used for SMI memory (for image processing), and
data is used for operation of the digital processor.
D2
3 IC4202 16M-FLASH RH-IXC361WJZZQ
This IC is a high performance CMOS super technology 16Mbit Flash
Memory.
Start software (loader) for the CPU with a built-in digital processor and
application software have been written on this Flash Memory.
The digital processor reads these softwares on start-up and implements
them.
D2
4 IC4204 64Kb-E2PROM VHIBR24S64M
BR24S64FVM is 64 Kbits E2PROM for I2C BUS.
This IC stores all data related to the digital module (channels, user set-
tings, etc.).
D2
5 IC4205 2.5V_REG VHIPQ025ENA This IC generates B2.5V-regurator. D2
6 IC4401
BUS TRAN-
CEIVER
VHILCX245FT-1Y
This IC is a low voltage (3.3V) CMOS 8bit bidirectional transceiver.
When setting the transmission direction change input DIR to “H”, the A
bus is switched to input and the B bus is changed to output; if the DIR is
set to “L”, the B bus is switched to input and the A bus is changed to
output. When setting the enable input OE to “H”, both A and B buses
enter the high impedance state. In this equipment, it used to switch bus
of the data from CI-CARD.
D3
7
IC4402/
04
BUS Buffer VHILCX16244-1Y
This IC is a CMOS 16-bit bus buffer of a low-voltage drive.
In this model, it is used to control negotiation communication with CI-
CARD.
D3
8 IC4405 BUS Buffer VHILCX126FT-1Y
This IC is a three State bus buffer of a low-voltage drive.
In this model, It is used in order to control the negotiation communica-
tion with the serial signal from a digital tuner, and processor IC.
D3
9 IC4410 5V SW VHIAOZ1320C-1Y
The AOZ1320 is a P-channel high-side load switch with controlled slew
rate.
In this model, it used as a 5V switch that supplies power to CI_CARD.
10
IC4601/
02
SW-REG(3.3/5V) VHI-1Y
This IC is a 1CH step down switching regulator.
In this model, 3.3V and 5V in a digital unit are generated.
D4
11 IC4603 3CH V-AMP VHITHS7314D-1Y
This IC is 3CH video amplifier with 6dB amplifier.
In this model, this 6dB video amplifier is used in order to drive the RGB
video signal processed by IC4001 to IC801.
D4
12 IC4604
1.2V_SERIES-
REG
VHIPQ012GN1-1Y This IC generates B1.2V-regurator. D4
13 IC4605 DUAL OP-AMP VHINJM4565V-1Y
The NJM4565 integrated circuit is a high-gain, wide-bandwidth, dual
low noise operational amplifier capable of driving 20V peak-to-peak into
400
Ω
load.
In this model, it used as a audio pre_amp from IC4001 (digital proces-
sor IC).
D4
NO REF NO Name Part Code Description Drawing NO