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This service manual was determinant to enable to fix my Alpine Amplifier. I am pleased with my purchase. For a 5 star rating I would like to see a higher resolution scan of the printed circuit board lay-out because the gray scale grafics was dificult to see. Also some schematic diagrams were scanned at a slight angle. Never the less, it had all information I needed to troubleshoot and service my equipment.
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Complete manual, the good quality of reproduction allows enlarged print-out of the schematic diagram in the size it probably had in the original print edition and which is necessary for practical use.
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The service manual was complete and the components on the drawings very good visible.
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downloaded next day , manual is very helpful , fast and easy
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This Service Manual was exactly what I needed to repair my Philips TV. The purchase was convenient and I received the manual at the same day I paid for it.
AV21BJ8ENS AV21BJ8EPS AV21BJ8EES AV20BJ8EES
SPECIFIC SERVICE INSTRUCTIONS
DISASSEMBLY PROCEDURE
REMOVING THE REAR COVER
1. Unplug the power c ord. 2. Remove the 5 screws marked A as shown in the Fig. 1. 3. Withdraw the rear cover toward you.
CHECKING THE PW BOARD
To check the back side of the PW Board. 1) Pull out the PW Board. (Refer to REMOVING THE MAIN PWB). 2) Erect the PW Board vertic ally so that you c an easily check the back side of the PW Board. [CAUTION] " When erecting the PW Board, be c areful so that there will be no contacting with other PW Board. " Before turning on power, make sure that the wire connector is properly connec ted. " When conducting a check with power supplied, be sure to c onfirm that the CRT EARTH WIRE (BRAIDED ASS�Y) is connected to the CRT SOCKET PW board.
REMOVING THE MAIN PWB
" Removing the rear cover. 1. Remove the screw marked B as s hown in the Fig.1. 2. Slightly raise the both sides of the chassis by hand and withdraw the MAIN PWB backward. (If necess ary, take off the wire clamp, connectors etc.)
REMOVING THE SPEAKER
" Removing the rear cover. 1. Remove the 4 screws marked C, and remove speaker as s hown in Fig. 1.
WIRE CLAMPING AND CABLE TYING
1. 2. Be sure to clamp the wire. Never remove the c able tie used for tying the wires together. Should it be inadvertently removed, be sure to tie the wires with a new c able tie.
REMOVING THE FRONT AV JACK PWB
" Removing the rear cover. " Removing the rear MAIN PWB. " Removing the FRONT CONTROL PW B 1. Remove the 2 screws marked D. 2. Remove the FRONT AV JACK PWB.
REMOVING THE HP JACK PWB
" Removing the rear cover. " Removing the MAIN PW B 1. Remove the 1 screws marked E . 2. Remove the HP JACK PWB
6
No.51998
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