Panasonic SJ-MJ55GH, Service Manual

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After replacing P.C.B. ASS’Y, please be sure to perform the “laser power adjustment”, “Off-set
automatic adjustment” and “Playback only disc/magneto-optical disc automatic
adjustment”.(Refer to “6
Measurements and Adjustments ”)
If the set is operated without adjusting, an error will be displayed and the set will not operate.
10. Schematic Diagram Notes
10.1. Type Illustration of IC's, Transistors and Diodes
10.2. Schematic Diagram Notes
This schematic diagram may be modified at any time with the development of new technology.
Notes:
S207
: Cover open/close det. switch
S208
: Hold switch in “OFF” position. (HOLD)
SX201
: Volume control switch (-)
SX202
: Volume control switch (+)
SX203
: Skip/search switch (
)
SX204
: Skip/search switch (
)
SX206
: Play/stop switch (
)
- 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 errors in the voltage values, depending on theinternal
impedance of the DC circuit tester.
No mark: MD STOP
( ): MD play [1kHz, L+R, 0dB] (*)
(*) The play of MD is performed in “Jitter measurement / (T4E)” mode.
(Refer to “6.2.1.
Enter the adjustment mode ” for the / method of going into
“Jittermeasurement (T4E) mode”).
Important safety notice:
Components identified by mark have special characteristics important for safety.
Furthermore, special parts which have purpose of fire-retardant (resistors), high-quality sound
(capacitors), low-noise (resistors), etc. are used. When replacing any of components, be sure to
use only manufacture's specified parts shown in theparts list.
Caution!
IC and LSI are sensitive to static electricity.