Pioneer pr 7820 service manual
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Extracted text from pioneer pr 7820 service manual (Ocr-read)
Page 1
JUNE 14, 1983
VIDEO DISC PLAYER
PR-7BED
GENERAL ADJUSTMENT PROCEDURES
flfiaé 5:55 :3: :3": 53:3 {5:3 (5:3 5 ii
(U) PIONEER
Page 2
FIR-7820 GENERAL Amusmmr PROCEDURE PAGE 1
DISC 10 BE USED: Bl (A2)
NOI'E: When viewing disc related signals (RF, FOCS ERROR, TRKG
ERROR, VIDEO, etc.) , the scope may be triggered externally
frcm SPDL 'I'P 4.
This test point is accessible when VTBC/SPDL cardcage cover
is removed .
CAU'IICN: When the TRKG board is pulled out, be sure to bend R 30
(shown below) upward slightly to prevent an accidental touching
of R 30to the terminal No. 24 (shown below) on the F'IMB
when the TRKG board is reinstalled.
TRKG
R 30 ,
Parts Side 1 \ l
/ I
V ,
TOP VEIW
Use the small size extender board for TRKG, the medium size
board for SPDL, and the large size board for VTBC adjustments.
'1'! -
'II x w"