Panasonic TC-21P50R Service Manual ▷ View online
- 5 -
A-Board
Location of Controls and Circuit Boards
Service Position for Main Board (A-Board)
Remove 7 Screws Pull out Main Chassis and stand it.
Location of Control
Board Name
Function
A-Board
Main
G-Board
Power and Audio
H-Board
Rear AV
L-Board
CRT
X-Board
Pincushion
X
H
L
G
A
FRONT
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Service Hints
Hotel Mode
Purpose
1. At Hotels, this Mode prevent customer from changing the TV preset data, such as Channel preset data.
Note : This Mode is useful for hotel, you should not get into " Hotel Mode" with Normal use.
Operation
1. To get into " Hotel Mode ", press the remote control " Recall [
] " button and Channel up" [ ] " key on the TV set simul-
taneously, after setting the " Off-Timer [
] " mode.
2. In this mode, The Channel up and down Function will be able as normal Mode, and The maximum volume level for this
mode is set at the current volume level, that means setting at the level before entering the mode.
However, other function will be disable.
However, other function will be disable.
3. To exit This mode, press the remote control " Off-Timer [
] " button and the " Volume Down [ - ] " key simultaneously.
The I
2
C Bus Concept:
A. Features
1. The I
2
C bus is a 2-wire serial bus consisting of a clock line (SCL) and a data line (SDA).
2. It allows bi-directional data transfer, between IC’s.
3. It consists of master and one or more slave IC’s.
-The master initiates transfer and generates clock signals.
-The slave is the IC addressed by a master.
-The slave is the IC addressed by a master.
B.I
2
C Application in the MX-8 Chassis.
During transfer the microcomputer IC1101 in the TV set is always the master device. IC601 and IC1102 are slave addressed by
IC1101.
IC1101.
1. Various control functions are possible via the I
2
C bus from the microcomputer IC1101 to VCJ IC601, as shown in Fig.1.
2. Date like position, BT voltage, band, AFC, skip, volume, recall, power and off timer setting, service mode setting, colour set-
ting, function etc, are stored and read out from the EEPROM IC1102 via the I
2
C bus.
Ref.No.
SCL
SDA
Location
Function
IC1102
6pin
5pin
A-Board
MEMORY (EEPROM)
IC1101
38pin
37pin
A-Board
MASTER (MICON)
TNR001
SCL
SDA
A-Board
TUNER
IC601
9pin
10pin
A-Board
VIDEO CHROMA JUNGLE (VCJ)
IC401
2pin
1pin
A-Board
PINCUSHION
IC5501
64pin
1pin
H-Board
VIDEO SIGNAL PROCESS
IC3001
20pin
21pin
H-Board
AV SELECT
IC2101
4pin
5pin
H-Board
AV STEREO
IC2102
16pin
17pin
H-Board
QUADRUPLE STEREO
SDA
SCL
SCL
MASTER
(IC1101)
(IC1102) MEMORY
Fig.1
(IC1102)
VCJ/SIF/VIF
SDA
SCL
SCL
SDA
SCL
SCL
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Market Mode Function
Outline :
MPU controls the functions switching for each IICs through IIC bus in MX-8 chassis. The following setting and adjust-
ment can be adjusted by remote control in Market Mode.
ment can be adjusted by remote control in Market Mode.
1.Selection of Market Mode
Adjust VOLUME “zero” and set OFF TIMER Button [
] (turn on the timer)
Then, simultaneously press the RECALL [
] Button on the remote control and the VOLUME DOWN button [ - ] on the TV
set.
2.Selection of CHK Mode
CHK1
Cursor moves each CHK mode by pressing "
¬
" or "
" of
10 key button for REMOTE CONTROL.
VCJ
ADJUSTMENT
ADJUSTMENT
PINCUSHION
ADJUSTMENT
ADJUSTMENT
WHITE BALANCE
ADJUSTMENT
ADJUSTMENT
NORMAL MODE
MARKET MODE
Exit Turn the power off
OPTION
SETTING
SETTING
CHK2
CHK3
CHK4
¬
¬
¬
¬
MARKET MODE
CHK2
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Adjustment data changing
To change the screen (item) in CHK mode, press “3” or “4” of 10 key button. Then Data and Level changes by pressing Volume
“+” or “-” button.
“+” or “-” button.
Option Setting Mode (CHK1)
VCJ Adjustment Mode (CHK2)
No.
Display
Adj. Range
Average Data
& Fixed [( )
mark] Data
mark] Data
Items
1
COLOUR SYS
0-6
0
Colour system
2
SOUND SYS
0-5
0
Sound system
3
PANA DISPLAY
ON/ OFF
OFF
Panasonic display on/off
4
TEXT
0-2
0
Text contrast
5
SASO
ON/ OFF
OFF
SASO on/off
6
GEO
0-2
0
Geomagnetic
7
STEREO
ON/ OFF
OFF
Stereo on/off
8
AV
ON/ OFF
ON
AV on/off
9
YUV
ON/ OFF
ON
YUV on/off
10
VCR/ GAME
ON/ OFF
OFF
VCR/GAME on/off
11
SPEED
ON/ OFF
ON
Speed on/off
12
NOISE MUTE
ON/ OFF
OFF
Noise mute on/off
13
CH PLAN
0-5, 9
9
Channel plan
No.
Display
Adj. Range
Average Data
& Fixed [( )
mark] Data
mark] Data
Items
1
COLOUR
0-63
32
Colour (the same as user control)
2
SUB COLOUR
00H-3FH
19H
Sub Colour
3
NTSC-TINT
0-63
33
NTSC Tint (the same as user control)
4
SUB NTSC-TINT
00H3FH
25H
Sub NTSC Tint
5
BRIGHT
0-63
33
Bright (the same as user control)
6
SUB BRIGHT
00H-FFH
43H
Sub Bright
7
CONTRAST
0-63
53
Contrast (the same as user control)
8
SUB Y CONTRAST
00H-1FH
0BH
Sub Y Contrast
9
SHARPNESS
0-63
32
Sharpness
10
R-Y
00H-0FH
09H
R-Y level
11
B-Y
00H-0FH
07H
B-Y level
12
BELL F0
00H-03H
01H
BELL Filter out
13
RF AGC
00H-FFH
7EH
RF AGC
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