Philips service tips chassis cp90 110 free download

File name service_tips__chassis_cp90__110.pdf

Useful info 1. A production change: A production change has been introduced adding a shield to the main control micro processor to prevent the processor being influenced by external fields In future, replacements will be supplied as a kit comprising the processor shield and fitting instruction. The shield will also be available separately. :Old mask No. Code No. ``````````` ``````` :CP90/110 TMP47C432P :8188 209 72038 :8189 209 73665 :New mask No. Kit code No. `````````` ``````````` :8188 310 31849 :8188 310 31849 :8189 310 31851 :Shield only. `````````` :Chassis Processor :CP90 TMP47C432P 2. There are two types of micro used on this chassis. Fault 1 Fast text use part number 20987305, non fast text use part number 20911391. 3. U743 tuner replacement. The U743 UHF tuner has been replaced by the U943. In all applications it is a direct replacement. Where the substitution was made during production some components, being no longer required, were deleted at the same time. This means that in some chassis the tuners are not reverse compatible ie. a U743 cannot be fitted in place of a U943 without first refitting components concerned with the +12V supply to pin 10 of the U743 tuner. The list of changes are as follows: :Old Tuner New Tuner Deleted :U743-600 U943-600 None :4822 210 50118 4822 210 10394. 5. Euroconnector code number. Note: The code number for the euroconnector mentioned in the documentation is incorrect. The correct code number is: 4822 267 60243. Please change this in your documentation. 6. Picture tube panel adjustments. Note: In the chassis documentation, chapter B; electrical instructions, picture tube adjustments, appears in line 6: "black level on the picture tube base on 1304". 1304 should be 130V. Add connection 7-IC7260 and remove earth. 7. Connection of a loop system to the TV. Note: A problem usually occurs when connecting a loop system to a modern TV. A solution is available from the hearing aid suppliers in the form of a specific loop system amplifier which is supplied from the mains and which functions with a scart or phono plug signal. On the advice of a specialist a large part of the cost is usually covered by insurance. 8. Microprocessor screening plate. Note: Connect the screening plate with the side of R3726 which is pointing towards the front of the chassis. 9. Replacing control IC7840. Fault 1: When replacing the control IC (IC7840) it is essential to ensure that the correct type is fitted. Type: TMP47C432AP-8187, TMP47C432AP-8188, standard teletext 4822 209 72038 or remote control only. TMP47C432AP-8189, FLOF (Fastext) or remote control only, 4822 209 87305 HA11484, CP90 Non remote 4822 209 83199. Note: FLOF (Full Level One Features) is a term frequently used in the service manual to describe a decoder equipped to hand