Sharp PN-V602 (serv.man7) Service Manual ▷ View online
CHAPTER 8. HARDWARE DESCRIPTIONS
PN-V602 HARDWARE DESCRIPTIONS
8 – 7
2. LOCAL DIMMING FUNCTION
This model employs the local dimming system which controls the brightness individually by dividing the LED’s into 16 x 12 lighting areas for saving
energy and improving the contrast. The difference from the conventional models is as explained below.
In the conventional systems as shown in Fig. 2-2a, video signals are transmitted in the path of the main PWB
3 LCD-TCON PWB 3 LED. The back-
light is turned ON/OFF by the main PWB.
In the local dimming system as shown in Fig. 2-2b, video signals are transmitted to the LED-TCON PWB, then divided into the two paths; one for con-
trol of LED lighting according images, and the other for displaying images. The LED-TCON controls the LED driver, and controls the brightness of
trol of LED lighting according images, and the other for displaying images. The LED-TCON controls the LED driver, and controls the brightness of
each area deliberately, lighting LED's at the proper brightness. At the same time, the corrected images according to the LED lighting are transmitted
to the LCD-TCON. The both operations work together to display proper images. The LED-TCON PWB and the LED driver PWB are the great factors
of the improvement in this model.
of the improvement in this model.
LCD-TCON
LED power
[+LED driver]
[+LED driver]
LCD
LED
Main PWB
Fig. 2-2a. System in the past
LCD-
TCON
LCD
LED
LED-
TCON
Fig. 2-2b. Local dimming system
Main PWB
[Panel side]
[Backlight side]
LED
driver
CHAPTER 8. HARDWARE DESCRIPTIONS
PN-V602 HARDWARE DESCRIPTIONS
8 – 8
LCD data
Error notification
LCD-
TCON
LED-
TCON
PWB
PWB
LCD data
LCD panel
LED backlight
LED data
LED data
Area control technology
Lights the necessary areas
at the proper brightness.
at the proper brightness.
Main I/F
PWB
Control signal
LED image (LED backlight)
LCD module
Output image (LED module)
LCD image (LED panel)
Input image
Image data
Image data
LED
driver
PWB
CHAPTER 8. HARDWARE DESCRIPTIONS
PN-V602 HARDWARE DESCRIPTIONS
8 – 9
3. FAN
3 - 1. FAN CONTROL
When the fan rotation speed is set to “Auto,” the fan rotation speed (RPM) changes automatically in accordance with the temperature of Sensor 1.
(Figure.X1)
(Figure.X1)
However, as the minimum RPM
*1
is specified, the fan doesn’t stop even at the temperature to stop the rotation in some cases.
See the Table.X1 below for the temperature obtained by each Sensor, the fan rotation speed and the threshold temp. for temperature watch.
*
1
The minimum RPM differs according to the current “brightness” setting, so the fan won’t stop depending on the brightness of screen.
*
2
The power fan is fixed-controlled. (Constant operation at about 1260rpm when the fan for the duct is operating)
FIGURE.X1 TEMPERATURE, FAN ROTATION SPEED (RPM) AND STATUS CHANGE BY TEMP.WATCH (FAN ROTATION SPEED SET TO "AUTO")
TABLE.X1 TEMPERATURE, FAN CONTROL AND THRESHOLD FOR TEMPERATURE ABNORMALITY
*
1
The LED flashes in red-green, the “Monitor Temperature” alert is displayed in the screen, and the brightness goes down to “Bright Level 5”.
(In the default settings, “Monitor Temperature” is not displayed.)
When it is in the status of high temp abnormality, if the temperature has lowered to 5°C or below, or the power is turned off and on by the button
When it is in the status of high temp abnormality, if the temperature has lowered to 5°C or below, or the power is turned off and on by the button
of Display Unit or the remote control, the status of high temp abnormality is cleared.
*
After power-on, the fan starts from 0 (rpm) and then the RPM is determined based on the temperature immediately after the power-on.
Display
installation/
layout
Temp. Sensor
Temp.to
lower RPM
Temp.to
raise RPM
Temp.to
lower RPM
Temp.to
raise RPM
Temp.
determined as
high-temp
*1
Temp.
for power
shut-off due to
high temp
Horizontal
installation
Sensor 1
38°C
43°C
49°C
54°C
61°C
66°C
Sensor 2
---
---
---
---
60°C
65°C
Sensor 3
---
---
---
---
60°C
65°C
Sensor 4
---
---
---
---
60°C
65°C
Sensor 5
---
---
---
---
62°C
67°C
Sensor 6
---
---
---
---
62°C
67°C
Vertical
installation
Sensor 1
42°C
47°C
50°C
55°C
62°C
67°C
Sensor 2
---
---
---
---
62°C
67°C
Sensor 3
---
---
---
---
62°C
67°C
Sensor 4
---
---
---
---
62°C
67°C
Sensor 5
---
---
---
---
62°C
67°C
Sensor 6
---
---
---
---
62°C
67°C
0
1200
3400
Fan Rotation
Speed
㩿rpm㪀
Temp.
to lower RPM
Temp.
to raise RPM
Temp.
to lower RPM
Temp.
to raise RPM
High temperature
abnormality
Temp. to
shut off the power
LED flashes in red-green,
"MonitorTemp" is
displayed, and the
brightnessgoes down.
"MonitorTemp" is
displayed, and the
brightnessgoes down.
It shifts to
thestandby
statusfor safety.
thestandby
statusfor safety.
CHAPTER 8. HARDWARE DESCRIPTIONS
PN-V602 HARDWARE DESCRIPTIONS
8 – 10
4. BLOCK DIAGRAM
Option
PN-ZB02 Expansion interf
ace
IC302
MSTR1_I2C
LCD module
D
V
I output
HDMI Tx
CN301
Sil
9
134
IC305
S-PWB1
S-PWB2
S-PWB3
S-PWB4
IC204
HDMI Tx
TMDS
EEPR
OM
Sil
9
134
HDMI_I2C
S-SOF
䊶䊶䊶䊶䊶
䊶
䊶
䊶
䊶䊶䊶䊶䊶
䊶
䊶
䊶
䊶䊶䊶䊶䊶
䊶
䊶
䊶
䊶䊶䊶䊶䊶
䊶
䊶
䊶
-DR
V
-DR
V
-DR
V
-DR
V
-DR
V
-DR
V
-DR
V
-DR
V
IC201
IC408
D
V
I input
HDMI Rx
U
A
R
T
㹤
IIC
G-SOF
CN201
Sil
9
135
SC16IS750
G-DR
V
Source Dr
iv
er :
4
UA
R
T
IC403
IC401
LAN
PHY
MPU
U
AR
T
G-DR
V
ColdFire
G-PW
B1
S
S
S
S
S
S
S
S
CN401
R
T
L8201EL
MCF52258
Remote control
receiv
er bo
x
Gate Dr
iv
er :
4
IC502
G-DR
V
SP OUT
A
U
DIO AMP
IC402
IC105
CN501
ST
A333W
SRAM
IR Receiv
er Sensor
IS63WV1024BLL
G-DR
V
MSTR1
_
I2C
G-PW
B2
IC106
RCA
CN104
I2S
Illumination Sensor
37.5V[T
yp]
37.5V[T
yp]
37.5V[T
yp]
37.5V[T
yp]
Sound input
Sound input
IC103
LED DRIVER PWB
RCA
CN105
MPU
LCD_TCON PWB
CN1:80pin
CN2:80pin
CN3:80pin
CN4:80pin
R5F21324CNSP
CN8
CN
9
,10
boost
*
-1
boost
*
-12
Conponent
IC10
IC
9
IC32
IC2
9
RGB
CN101
P
a
ra
llel
BD
9
306A
BD
9
306A
BD
9
306A
BD
9
306A
Composite
Flash
VCOM
CN102
Buf
FPGA
TCON
control
24V
24V
CN1[Sensor PWB]
Config
S-ter
minal
Po
w
e
r
T
e
mper
ture sensor
RO
M
DCDC/
CN106
TH2
䌾㪋
T
e
mper
ture sensor
T
e
mper
ture sensor
TH5
䌾㪍
Ser
ial
IC12
IC25
CN103
CN104
CN301[LED po
w
er]
EEPR
OM
LED Dr
iv
er
LED Dr
iv
er
CN1
CN2
iW7032S
LED1-
*
iW7032S
5.5V
LED12-
*
MAIN_IF PWB
13.5V
3.3V
SPI0[IC1
䌾
6]
2.5MHz
CN402
CN1301
MSTR1
Micro computer
Scaler
IC1004
Po
w
e
r
R5F21386CNFP
CN1202
CN8
䋺
30pin
C
N5
䋺
6pin
C
N6
䋺
7pin
P
o
w
e
r
SPI Flash
32Mbit
Buf
12V
IC401
24V
24V
EEPR
OM
IC300
LED_TCON PWB
I2S
Analog
I2C
P
o
w
e
r
CN1201
MSTR1_I2C
CN3
CN1
LED PO
WER
PWB
LED PO
WER
PWB
Buf
HDMI_ARX
12V
SW
12V
CN201
CN201
HDMI
SW
HDMI_I2C(DDC)
SW
Duct F
A
N
I2C
LV
D
S
12V
FET1
3.3V
CN401
HDMI_BRX
FM1
䌾
8
100kHz
1ch(8bit)
IC1
IC304
TMDS
IC1008
IC1006
IC1007
RT
C
12V
SPI Flash
EEPR
OM
RS5C372A
IC3
2Mbit
CSA,nGA
TE
VG
A
I
N
V
G
A_I2C
GPIO
LED po
w
er F
A
N
IRIS
CN8
CN301
MSTR0_I2C
FM
9
䌾
10
CN6
LV
DS
(dimming control)
SPI(3MHz)
e
v
en(10bit)
12V
㱢
3.5
STDP8028-AB(MARS)
EEPR
OM
3.3V
CN502
AU
D
2
in
TH1
128kbi
I2C
IC7
CN301
TH5
CN301
TH6
LV
DS(O
,E)
333kHz
FPGA
S
W
T
e
mper
ture
sensor
T
e
mper
ture
sensor
Sound output
A
U
D2_out
GPIO
LV
DS(e
v
en) + GPIO
CN801
I2C
LocalBus
EP3C16
E
CN501
IC6
(LED-Dr
IC15
CN101
CN101
UDIO_LPM
MSTR1
Sub m
icro computer
control
)
EEPR
OM
OCM_UDIO0
GPIO
uPD78F1165
64kbit
IC1103
SW
OCM
_UDIO1
UDIO1
IC
9
MSTR1_I2C
CN1401
U
A
R
T
Config_R
OM
GPIO
CN7
EPCS4SI8N
IC1101
IC602/603
RS232C IN
ɦ
Buff
er
DDR2
SW
LED
KEY
DDR
512Mbit
LED_PO
W_ON
*
12V
MSTR1_I2C
CN1101
Buff
er
SW
CN5
5V
RS232C OUT
ɥ
IC1102
U
A
R
T(UDIO1)
1
9
V
CN101
KEY
13.5V
U
A
R
T(UDIO1)
A
C
_DET
CN301
A
C
RELA
Y PWB
B
U
5V
12V
Q104
CN201
1
9
V
5
V
CN501
CN5
CN4
A
C
FET
P
o
w
e
r
F
AN_12V
13.5V
1
9
V
P_ON
CN102
B
U
5V
RJ11
P
A
NEL_PO
W
CN2
CN1103
B
U
5V_CNT
AC
CN3
A
C
CN1102
CN103
12V
CN401
CN101
CN1
CN101
SYSTEM PO
WER PWB
AC
sw
it
c
h
LED
PWR
RIGHT
LEFT
UP
DO
WN
MENU
INPUT
100V
䌾
240V
KEY PWB
LED_PO
W_ON
Rela
y
Ctr
l
A
C
input
LCD panel
[UV A]
2
(WXGA
䋺
1366x768)
AA
A
A
VLED6
VLED1
䊶䊶䊶䊶䊶䊶䊶䊶䊶䊶
(8 areas f
or 1 system)
(When set to 56mA)
CN1:80pin
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KKKK
x48 area
VLED* [6 systems]
V
o
ltage:37.5V[T
yp]
6 LED's f
or 1 area
T
o
tal LED48x6=288
AA
A
A
VLED6
VLED1
䊶䊶䊶䊶䊶䊶䊶䊶䊶䊶
(8 areas f
or 1 system)
(When set to 56mA)
CN1:80pin
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KKKK
x48 area
VLED* [6 systems]
V
o
ltage:37.5V[T
yp]
6 LED's f
o
r 1 area
T
o
tal LED48x6=288
AA
A
A
VLED6
VLED1
䊶䊶䊶䊶䊶䊶䊶䊶䊶䊶
(8 areas f
o
r 1 system)
(When set to 56mA)
CN1:80pin
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KKKK
x48 area
VLED* [6 systems]
V
o
ltage:37.5V[T
yp]
6 LED's f
o
r 1 area
T
o
tal LED48x6=288
AA
A
A
VLED6
VLED1
䊶䊶䊶䊶䊶䊶䊶䊶䊶䊶
(8 areas f
or 1 system)
(When set to 56mA)
CN1:80pin
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KK
x4
8䉣䊥
䉝
KKKK
x48 area
VLED* [6 systems]
V
o
ltage:37.5V[T
yp]
6 LED's f
o
r 1 area
T
o
tal LED48x6=288
SPI1[IC7
䌾
12]
SPIx2(2.5MHz), Vsync
inlet
Gr
adation potential
gener
ation
P
o
w
er
circuit
Booster circuit
Booster circuit
Booster circuit
Booster circuit
LED dr
iv
ers 12 units (Boosting x 2, LED dr
iv
er x 1, 12 sets)
24V
(Left side when
vie
w
ed from the
bac
k
)
[P
o
w
er supply to
the LED PWB's in
the upper side]
24V
(Left side when
vie
w
ed from the
bac
k)
[P
o
w
er supply to
the LED PWB's in
the upper side]
Number of division of Local dimming 16 x 12 [1
9
2 divisions], total n
u
mber of LED:
1152
LED PWB:
Left upper
[Light emitting surf
ace]
LED PWB:
Left lo
w
e
r
[Light emitting surf
ace]
LED PWB:
Right upper
[Light emitting surf
ace]
LED PWB:
Right lo
w
e
r
[Light emitting surf
a
ce]
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