Toshiba 43A62 Service Manual

Also see for 43A62: Owner's manual Owner's manual

– 10 –GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS7. SELF DIAGNOSTIC FUNCTION1) Press “9” button on Remote Control during display of adjustment menu in the service mode.The diagnosis will begin to check if interface among IC’s are executed properly.2) During diagnosis, the following displays are shown. Part number of microprocessor (QA01) Operation number of protection circuit (current limiter) . . . . “000” is normal. BUS line check “OK” ................... Normal“SCL-GND” or “NG” ........... SCL-GND short circuit“SDA-GND” or “NG” ........... SDA-GND short circuit“SCL-SDA” or “NG” ............ SCL-SDA short circuit BUS line ACK (acknowledge) check“OK” ..................... NormalDisplay of Location Number . . . . NG(Display example)“QA02 NG”, “H001 NG”, “Q501 NG” etc.Note: The indication of failure place is only one place though failure places are plural. Whenrepair of a failure place finishes, the next failure place is indicated. (The order of priority ofindication is left side.) Sync. signal check Green display ..... NormalRed display ........ NGMAIN ........ Main syncSUB .......... Sub sync (when turn on the PIP)4. SELECTING THE ADJUSTING ITEMS1) Every pressing of CHANNEL s button in the service mode changes the adjustment items in the order of table-2.(t button for reverse order)Refer to table-2 for preset data of adjustment mode.(See SETTING & ADJUSTING DATA on page 17)5. ADJUSTING THE DATA1) Pressing of VOLUME s or t button will cahnge the value of data in the range from 00H to FFH. The variable rangedepends on the adjusting item.6. EXIT FROM SERVICE MODE1) Pressing POWER button to turn off the TV once. INITIALIZATION OF MEMORY DATA OF QA02After replacing QA02, the following initialization is required.1. Enter the service mode, then select any register item.2. Press and hold the RECALL button on the Remote, then press the CHANNEL s button on the TV. The initialization of QA02has been complated.3. Check the picture carefully. If necessary, adjust any adjustment item above.Perform “Programming Channel Memory” on the owner's manual.CAUTION: Never attempt to initialize the data unless QA02 has been replaced.SELF CHECKNO. 23******POWER : 000BUS LINE : OKBUS CONT : OKBLOCK : MAIN SUB