Sharp LC-30HV4E (serv.man2) Service Manual ▷ View online
30
LC-30HV4E
3. Adjusting Mode
1. Overview
The controller IC can be adjusted in this mode.
Adjustment is done while controlling the setting of the resistor corresponding to the selected adjustment item.
When monitor is used independently, it is adjusted using the OSD simple display function incorporated in LCD
controller.
The OSD function of panel link receiver (SIL861) is used for adjustment of the independent monitor.
Adjustment is done while controlling the setting of the resistor corresponding to the selected adjustment item.
When monitor is used independently, it is adjusted using the OSD simple display function incorporated in LCD
controller.
The OSD function of panel link receiver (SIL861) is used for adjustment of the independent monitor.
2. Entry to the mode
1) When cable is not connected (independent mode), follow the steps below.
a) When power switch is turned on, press the main unit INPUT and VOL DOWN keys simultaneously.
b) Press the remote controller's process adjustment key (R/C code: 40h) / process adjustment mode 2 key (R/
b) Press the remote controller's process adjustment key (R/C code: 40h) / process adjustment mode 2 key (R/
C code: 31h).
2) When not in independent mode, follow the steps below.
a) When power switch is turned on, press the main unit CH DOWN and VOL UP keys simultaneously.
b) Press the remote controller's process adjustment mode 2 key.
b) Press the remote controller's process adjustment mode 2 key.
3. Exit from the mode
Turn off the power.
Press the remote controller's process adjustment mode 2 key.
Press the remote controller's process adjustment mode 2 key.
4. Display
1) First layer display
The third line shows the title. The 5th line and below show the items. Microprocessor's version number
appears in the 16th line.
appears in the 16th line.
Example) 1.00
→
1 00
2) Second layer display (Adjustment item display)
A single page shows up to 10 adjustment items (or 14 lines).
The third line shows the title and the screen mode selected in MODE items (only when LCD is selected).
The 5th line shows the item. Microprocessor's version number appears in the 16th line.
Example) 1.00
The third line shows the title and the screen mode selected in MODE items (only when LCD is selected).
The 5th line shows the item. Microprocessor's version number appears in the 16th line.
Example) 1.00
→
1 00
Setting is shown in decimal number.
a) Adjustment on the LCD items
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 S E R V
I C E
M O D E
2 O M O D E
5 0 H Z
3
L C D
4
S I L 8 6 1
5
T E S T
6
V E R
X
X X
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 L C D
5 0 H Z
2 O V L 0
2 2 1
3
R E F 0
2 0 9
4
V L 6 4
9 8
5
R E F 6 4
1 7 0
6
V L 9 6
9 2
7
R E F 9 6
1 8 4
8
V L 1 2 8
8 5
9
R E F 1 2 8
1 8 8
10
V L 1 6 0
7 1
11
R E F 1 6 0
1 9 9
31
LC-30HV4E
5. Changing data
In "adjustment item display", the items pointed by cursor can be changed using VOL UP/DOWN key.(Holding
down the key is effective.)
For the items in "LCD DATA", select the item and hit ENTER key. The ten's digit (leftmost digit) in the address
changes to red (others in green). Data change using VOL UP/DOWN key is enabled.
To move to the next digit, press CH UP key (or rightward cursor key). To go back to the previous digit, press CH
DOWN key (or leftward cursor key). Thus, 4 digits data can be entered.
When CH UP key is pressed while in rightmost digit, the cursor moves to the leftmost digit. When CH DOWN key
is pressed while in leftmost digit, the cursor moves to the rightmost digit.
After address data adjustment, press ENTER key to exit from 4-digit adjustment and change the entire "LCD
DATA" line to red letters. (Same status as item selection)
down the key is effective.)
For the items in "LCD DATA", select the item and hit ENTER key. The ten's digit (leftmost digit) in the address
changes to red (others in green). Data change using VOL UP/DOWN key is enabled.
To move to the next digit, press CH UP key (or rightward cursor key). To go back to the previous digit, press CH
DOWN key (or leftward cursor key). Thus, 4 digits data can be entered.
When CH UP key is pressed while in rightmost digit, the cursor moves to the leftmost digit. When CH DOWN key
is pressed while in leftmost digit, the cursor moves to the rightmost digit.
After address data adjustment, press ENTER key to exit from 4-digit adjustment and change the entire "LCD
DATA" line to red letters. (Same status as item selection)
6. Key operation
1) Basic behaviors
Basic key behaviors are as follows.
2) Data UP/DOWN
For the item for which OSD display is available, switch the display.
Adjust the data with UP/DOWN operation. (Any value beyond the limit is replaced by the limit value.)
Output data processing
Data transmission for every UP/DOWN operation (Data related to peripheral controller IC)
Execution of the last memory data when key is off
While the key is held down, the second step is performed approx. 500ms after the key operation and, after this,
every single step of UP/DOWN is carried out sequentially at 135ms interval.
Adjust the data with UP/DOWN operation. (Any value beyond the limit is replaced by the limit value.)
Output data processing
Data transmission for every UP/DOWN operation (Data related to peripheral controller IC)
Execution of the last memory data when key is off
While the key is held down, the second step is performed approx. 500ms after the key operation and, after this,
every single step of UP/DOWN is carried out sequentially at 135ms interval.
3) Cursor UP/DOWN
Select the adjustment item by pointing it with the cursor.
When upward cursor movement is done while the cursor is at the top item, the cursor goes to the bottom item.
(In the case of multiple pages, the cursor goes to the bottom item on the previous page.)
When downward cursor movement is done while the cursor is at the bottom item, the cursor goes to the top item.
(In the case of multiple pages, the cursor goes to the top item on the next page.)
While the key is held down, the second step is performed approx. 500ms after the key operation and, after this,
every single step of UP/DOWN is carried out sequentially at 135ms interval.
When upward cursor movement is done while the cursor is at the top item, the cursor goes to the bottom item.
(In the case of multiple pages, the cursor goes to the bottom item on the previous page.)
When downward cursor movement is done while the cursor is at the bottom item, the cursor goes to the top item.
(In the case of multiple pages, the cursor goes to the top item on the next page.)
While the key is held down, the second step is performed approx. 500ms after the key operation and, after this,
every single step of UP/DOWN is carried out sequentially at 135ms interval.
b) Adjustment on the TEST items
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 T E S T
2 O L
2 O L
E R R
R E
0
3
L C D
D A T A
0 0 0 0
4
W A I
T
5
C L R
M O D E
0
6
W A I
T
7
C N F G
E E P
0 0 0 0
8
W A I
T
Behavior
Keys
Remote controller Main unit
Remote controller Main unit
Upward cursor movement
Cursor up
CH UP
Downward cursor movement Cursor down
CH DOWN
Rightward cursor movement Cursor right
Leftward cursor movement
Leftward cursor movement
Cursor left
Data UP
VOL UP
VOL UP
Data DOWN
VOL DOWN
VOL DOWN
Set
ENTER
INPUT
Back to previous layer
RETURN
Back (In bottom layer only)
ENTER
INPUT
32
LC-30HV4E
ADJUSTMENT MODE MENU LIST
First layer item
PAGE
ITEM
SETTING RANGE
INITIAL VALUE
DATA SETTING
MODE
1
50HZ/60HZ/PC
50HZ
Toggle
LCD
1
VL0
0 ~ 255
221
No Toggle
REF0
0 ~ 255
209
No Toggle
VL64
0 ~ 255
98
No Toggle
REF64
0 ~ 255
170
No Toggle
VL96
0 ~ 255
92
No Toggle
REF96
0 ~ 255
184
No Toggle
VL128
0 ~ 255
85
No Toggle
REF128
0 ~ 255
188
No Toggle
VL160
0 ~ 255
71
No Toggle
REF160
0 ~ 255
199
No Toggle
2
VL192
0 ~ 255
77
No Toggle
REF192
0 ~ 255
103
No Toggle
VL224
0 ~ 255
88
No Toggle
REF224
0 ~ 255
112
No Toggle
VL256
0 ~ 255
108
No Toggle
REF256
0 ~ 255
78
No Toggle
COM BIAS
0 ~ 255
70
No Toggle
PWM CTRL
0 ~ 7
Toggle
PWM FREQ
0 ~ 4095
585
No Toggle
PWM DUTY
0 ~ 4095
0
No Toggle
3
PATTERN1
0 ~ 14
0
Toggle
PATTERN2
0 ~ 12
0
Toggle
P – CLK1
0 ~ 3
0
No Toggle
P – CLK2
0 ~ 7
0
No Toggle
OS SW
0 ~ 1
0
Toggle
OS D1
0 ~ 255
138
No Toggle
OS D2
0 ~ 255
167
No Toggle
OS D3
0 ~ 255
170
No Toggle
OPC LV0
0 ~ 85
0(40)
No Toggle
OPC LV1
0 ~ 85
8(44)
No Toggle
4
OPC LV2
0 ~ 85
16(48)
No Toggle
OPC LV3
0 ~ 85
24(52
)No Toggle
OPC LV4
0 ~ 85
32(56)
No Toggle
OPC LV5
0 ~ 85
40(60)
No Toggle
OPC LV6
0 ~ 85
48(64)
No Toggle
OPC LV7
0 ~ 85
56(68)
No Toggle
OPC LV8
0 ~ 85
64(72)
No Toggle
OPC LV9
0 ~ 85
72(76)
No Toggle
OPC LV10
0 ~ 85
80(80)
No Toggle
SIL861
1
R GAMMA
20 ~ 180
100
No Toggle
R OFFSET
0 ~ 510
256
No Toggle
G GAMMA
20 ~ 180
100
No Toggle
G OFFSET
0 ~ 510
256
No Toggle
B GAMMA
20 ~ 180
100
No Toggle
B OFFSET
0 ~ 510
256
No Toggle
TEST
1
L ERR RESET
0 ~ 5 0
Toggle
LCD DATA
Four digits 0 ~ F
0
Toggle
WAIT/SEND
WAIT
———
CLR MODE
One digits 0 ~ 2
0
Toggle
WAIT/SEND
WAIT
———
CNFG EEP
Four digits 0 ~ F
0
Toggle
WAIT/SEND
WAIT
———
* Values in the parentheses are with PC.
33
LC-30HV4E
MAJOR IC FUNCTIONS INFORMATIONS
∫
IC2501 (MSP4418G)
IC for decoding audio signals.
It serves as an S-IF audio signal decoder and an audio data selector.
IC for decoding audio signals.
It serves as an S-IF audio signal decoder and an audio data selector.
∫
IC2510 (IXA385WJ)
IC for controlling audio delay.
LC-30/37HV4E uses a frame buffer to process video signals. This results in delay in outputting video signals.
The IC delays output of audio signals to synchronize output of video and audio signals.
IC for controlling audio delay.
LC-30/37HV4E uses a frame buffer to process video signals. This results in delay in outputting video signals.
The IC delays output of audio signals to synchronize output of video and audio signals.
∫
IC1301 (CXA2069Q)
7-input, 3-output selector.
This IC selects all audio and video signals received from input terminals and the tuner, except those signals
that relates to PC and components.
Video signals delivered to the IC are sent to YC separation circuits IC401 (main) and IC402 (sub). Audio
signals are sent to the SR unit via IC2501 (sound processor).
This IC selects all audio and video signals received from input terminals and the tuner, except those signals
that relates to PC and components.
Video signals delivered to the IC are sent to YC separation circuits IC401 (main) and IC402 (sub). Audio
signals are sent to the SR unit via IC2501 (sound processor).
∫
IC401 (MM1519XQ)
4-input, 3-output video selector for component input.
This IC receives AV3 component input, AV1/3 RGB input and teletext RGB signals. Its output is for main, sub
and component.
4-input, 3-output video selector for component input.
This IC receives AV3 component input, AV1/3 RGB input and teletext RGB signals. Its output is for main, sub
and component.
∫
IC1601 (SDA5550M)
Teletext processing microcomputer.
This IC receives vide signals, decodes teletext and outputs data in RGB format.
Teletext processing microcomputer.
This IC receives vide signals, decodes teletext and outputs data in RGB format.
∫
IC401/IC402 (TC90A69)
Adaptive infield 3-line digital comb filter supporting both NTSC and PAL.
This IC is a high-precision Y/C 1 chip incorporating a CNR circuit and performs YC separation of the sub video
signals received from IC1301.
Adaptive infield 3-line digital comb filter supporting both NTSC and PAL.
This IC is a high-precision Y/C 1 chip incorporating a CNR circuit and performs YC separation of the sub video
signals received from IC1301.
∫
IC403/IC404 (ML6428C1)
6.7 MHz low-pass filter.
6.7 MHz low-pass filter.
∫
IC801/IC802 (TB1274AF)
IC for synchronous processing of video and chroma signals for PAL/NTSC/SECAM color TV.
Color demodulation is provided by a high-performance image compensation circuit in the video section, a PAL/
NTSC/SECAM auto discrimination circuit in the chroma section, and a crystal that generates 4.43 MHz, 3.58
MHz and M/N-PAL clock signals.
This IC has a 4-channel YC signal input, 2-channel RGB signal input, and 2-channel chrominance signal input.
It receives main and sub chrominance signals from IC401 (main) and IC402 (sub) and delivers chrominance
signals via one-channel output.
IC for synchronous processing of video and chroma signals for PAL/NTSC/SECAM color TV.
Color demodulation is provided by a high-performance image compensation circuit in the video section, a PAL/
NTSC/SECAM auto discrimination circuit in the chroma section, and a crystal that generates 4.43 MHz, 3.58
MHz and M/N-PAL clock signals.
This IC has a 4-channel YC signal input, 2-channel RGB signal input, and 2-channel chrominance signal input.
It receives main and sub chrominance signals from IC401 (main) and IC402 (sub) and delivers chrominance
signals via one-channel output.
∫
IC803 (CXA2101Q)
IC having a chrominance input integrated with a high-performance image compensation circuit. Equipped with
circuits for processing baseband signals and RGB signals and a 4-channel video switch incorporating an H/V
synchronization signal processing circuit.
Input selection is done by INPUT-SEL (IIC BUS). Y, Pb, Pr and GBR of Ycb, Cr and HD and their H/V
synchronization signals are inputted to input pins of each channel.
Multi-scan facility permits acceptance of a horizontal scan line frequency range of 16 KHz to 60 KHz.
IC having a chrominance input integrated with a high-performance image compensation circuit. Equipped with
circuits for processing baseband signals and RGB signals and a 4-channel video switch incorporating an H/V
synchronization signal processing circuit.
Input selection is done by INPUT-SEL (IIC BUS). Y, Pb, Pr and GBR of Ycb, Cr and HD and their H/V
synchronization signals are inputted to input pins of each channel.
Multi-scan facility permits acceptance of a horizontal scan line frequency range of 16 KHz to 60 KHz.
Click on the first or last page to see other LC-30HV4E (serv.man2) service manuals if exist.