10
HCD-CP505
Jig For Checking BD (MD) Board Waveform
The special jig (J-2501-196-A) is useful for checking the waveform of the BD board. The names of terminals and the checking items to be
performed are shown as follows.
GND : Ground
I+3V : For measuring Iop (Check the deterioration of the optical pick-up laser)
Iop
: For measuring Iop (Check the deterioration of the optical pick-up laser)
TE
: TRK error signal (Traverse adjustment)
VC
: Reference level for checking the signal
RF
: RF signal (Check jitter)
FE
: Focus error signal
I+3V
Iop
TE
VC
GND
FE
RF
CN105
I+3V
Iop
GND
TE
FE
VC
RF
I+3V
Iop
GND
TE
FE
VC
RF
1
7
for MDM-7S2C
SECTION 1
SERVICING NOTE
• Disc Tray Lock
If the disc tray does not open and the message “LOCKED” appears,
press the two buttons of ENTER/START and
Z
DVD at the same
for 5 seconds or longer.
Then the lock is released, the message “UNLOCKED” appears for
2 seconds and the disc tray opens.
Содержание HCD-CP505
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Страница 65: ...65 65 HCD CP505 6 20 Schematic Diagram Switch Section Page 62 Page 55 ...
Страница 69: ...69 HCD CP505 6 24 Schematic Diagram OPTICAL Board J CN602 DIGITAL 470 Page 62 ...
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