Panasonic TC-21P50R Service Manual

Also see for TC-21P50R: Operating instructions

Contents

Panasonic TC-21P50R Service Manual Manual pdf 6 page image

- 6 -Service HintsHotel ModePurpose1. 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.Operation1. 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 thismode 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 [ ] " button and the " Volume Down [ - ] " key simultaneously.The I 2 C Bus Concept:A. Features1. The I2 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.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 byIC1101.1. 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 2C bus.Ref.No. SCL SDA Location FunctionIC1102 6pin 5pin A-Board MEMORY (EEPROM)IC1101 38pin 37pin A-Board MASTER (MICON)TNR001 SCL SDA A-Board TUNERIC601 9pin 10pin A-Board VIDEO CHROMA JUNGLE (VCJ)IC401 2pin 1pin A-Board PINCUSHIONIC5501 64pin 1pin H-Board VIDEO SIGNAL PROCESSIC3001 20pin 21pin H-Board AV SELECTIC2101 4pin 5pin H-Board AV STEREOIC2102 16pin 17pin H-Board QUADRUPLE STEREOSDASCLMASTER(IC1101)(IC1102) MEMORYFig.1(IC1102)VCJ/SIF/VIFSDASCLSDASCL