Panasonic SJ-MR220, Service Manual

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“F15”---This indication appears when the Down switch fails to turn ON since the magnetic head
fails to move up/down normally (Due to trouble of the magnetic head or trouble of the magnetic
head up/down motor) or the magnetic head P.C.B. is out of position or a foreign matter has mixed
in or for some other reason.
In such a case, check the peripheral parts of the magnetic head, repair or replace defective parts
with normal ones.
10. Schematic Diagram Notes
10.1. Schemtic Diagram Notes
This schematic diagram may be modified at any time with the development of new technology.
Notes:
S1
: Magnetic head up switch (M.HEAD UP)
S2-1
: Open/close det. switch (OPEN/CLOSE)
S2-2
: PROTECT det. switch
S801
: Play / record / pause / operation on /
character type button ( , CHARA)
S802
: Recording pause / operation on / LP
recording switch (REC , LP MODE)
S803
: Stop / operation off / edit cancel button (
,
OPR OFF)
S804
: Enterling edit mode, completing edit,
changing track ,mark mode switch (EDIT,
MARK MODE)
S806
: Hold swithc in “OFF” position. (HOLD )
- Indicated voltage values are the standard values for the unit
measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard. Therefore, there may exist some
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