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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 [
taneously, after setting the " Off-Timer [
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.
3. To exit This mode, press the remote control " Off-Timer [
2
The I
C Bus Concept:
A. Features
2
1. The I
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.
2
B.I
C Application in the MX-8 Chassis.
MASTER
During transfer the microcomputer IC1101 in the TV set is always the master device. IC601 and IC1102 are slave addressed by
IC1101.
1. Various control functions are possible via the I
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
Ref.No.
IC1102
IC1101
TNR001
IC601
IC401
IC5501
IC3001
IC2101
IC2102
] " mode.
SDA
SCL
(IC1101)
SDA
SCL
(IC1102) MEMORY
2
C bus from the microcomputer IC1101 to VCJ IC601, as shown in Fig.1.
SCL
SDA
6pin
5pin
38pin
37pin
SCL
SDA
9pin
10pin
2pin
1pin
64pin
1pin
20pin
21pin
4pin
5pin
16pin
17pin
] " button and Channel up" [
] " button and the " Volume Down [ - ] " key simultaneously.
Fig.1
2
C bus.
Location
A-Board
A-Board
A-Board
A-Board
A-Board
H-Board
H-Board
H-Board
H-Board
- 6 -
] " key on the TV set simul-
SDA
(IC1102)
SCL
VCJ/SIF/VIF
Function
MEMORY (EEPROM)
MASTER (MICON)
TUNER
VIDEO CHROMA JUNGLE (VCJ)
PINCUSHION
VIDEO SIGNAL PROCESS
AV SELECT
AV STEREO
QUADRUPLE STEREO
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