Yamaha HTR-5890 Service Manual page 11

5. Removal of VIDEO (1), (3), (5) ~ (8), FUNCTION,
CONVERSION P.C.B.s and Tuner
a. Remove 26 screws (0). (Fig. 5)
b. Remove VIDEO (1), (3), (5) ~ (8), FUNCTION,
CONVERSION P.C.B.s and Tuner.
When checking the P.C.B.:
• Put the Rubber Sheet and a Cloth over the equipment.
Then place the P.C.B. upside down on the Cloth and
check it. (Fig. 6)
• Reconnect all cables (connectors) that have been
disconnected.
Be sure to use the extension cable for servicing for the
following section.
FUNCTION P.C.B. CB505 – OPERATION (1) P.C.B. CB864:
MF113500 (13P 500mm)
FUNCTION P.C.B. CB512 – OPERATION (1) P.C.B. CB852:
MF115500 (15P 500mm)
• When connecting the flat cable, use care for the
polarity.
FUNCTION P.C.B.
• In this unit, the ground of P.C.B.s shown below is
connected to the rear panel. When these P.C.B.s are
removed from the rear panel, connect the ground to
the rear panel or chassis, using a lead wire or the like.
(Fig. 7)
DSP P.C.B.
FUNCTION P.C.B.
VIDEO (1) P.C.B.
VIDEO (3) P.C.B.
VIDEO (5) P.C.B.
CONVERSION P.C.B.: PJ801 (CONPONENT VIDEO)
Fig. 6
Ground Point
Fig. 7
: PJ501 (DIGITAL INPUT)
: PJ504 (MULTI CH INPUT)
: JK605 (S VIDEO)
: PJ705 (VIDEO)
: PJ503 (DVR/VCR 2)
Ground Point
HTR-5890
11