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“F17”---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.
9. Caution for Replacing EEPROM IC (IC502) and
System Control IC (IC501)
Please be sure to perform “Laser power adjustment”, “Off-set automatic adjustment”, “Playback
-only disc auto-adjustment” and “Magneto-optical disc auto-adjustment” after exchangingeither
EEPROM IC (IC502) or the system control IC (IC501). (Please refer to “6. Measurements and
Adjustment” about the adjustment method)
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)
S501
:
PROTECT det., OP/ CL switch
S801
:
Play / record / pause switch ( )
S802
:
Recording pause / LP recording switch (REC
/ LP MODE)
S803
:
Stop / operation off switch ( OPR OFF)
S804
:
Forward skip switch ( )
S805
:
Reverse skip switch ( )
S806
:
Volume + switch (VOL+)
S807
:
Volume - switch (VOL-)