The following items for the AV-29L31/DPH & AV-29L31B/DPH models were changed from those of the AV-29L31/PH & AV-29L31B/PH models. Therefore, this service manual describes mainly the items which differ from those of the AV-29L31/PH & AV-29L31B/PH service manual. But the difference of Main PWB ASS�Y is too much, so only Main PWB ASS�Y Electrical Parts List, Circuit Diagrams and Pattern Diagrams are described every information. For details other than those described in this manual, please refer the AV-29L31B/PH & AV-29L31B/PH service manual (No. 51906, Oct. 2001).