DMC-G7R(k)
DMC-G7R
6
COVER(
98.4.24
Y Test mode checkContinued from the preceding page
Insert a high reflection (low reflection) disc, and once perform automatic adjustment in AUTO mode, and then check in MANUAL mode.
Simultaneously observe waveforms of EFM(TP145), FEOUT(TP143), and TEOUT(TP144).In case of high reflection disc, proceed to the item "normalCheck whether values of pins 10, 11, 14, and 15 of IC201 and
playback".In case of low reflection disc, check whetherNopins 30 and 32 of IC101 (TP143) change when the /
Does the optical pickup move to outer/inner periphery whenadjustment is within allowable range in the TOTAL levelCheck the pins 56 and 57 of IC201, the pins 25, 27, 29 and 30button is pressed.2:19
the / button is pressed?Noadjustment step.of IC601, the pins 10 and 11 of CNS601, and the slide motor
terminal.Yes
YesPM
y[W
Is tracking error offset measurement within allowable range?Doesn't the disc motor run at high speed in the same step?Check Vref values of pins 3 and 4 of IC101 and pin 22 of IC201.Check ADIP waveform of pin 4 of IC201.
NoNoYes
Yes
Is focus error offset measurement within allowable range?Is tracking gain adjustment within allowable range in theCheck Vref values of pins 3 and 4 of IC101 and pin 22 of IC201.same step?Check whether values of pins 16 to 19 of IC201 and TP144 11
NoNo(TEOUT) change when the / button is pressed.
Yes
Yes
Is laser power normal when laser lights?Check the pins 21 and 22 of IC101, the pins 6 and 52 of IC401,Is adjustment within allowable range in tracking errorCheck whether value of pin 20 of IC201 and TP144(TEOUT)
Nothe periphery of Q101, Q102, and Q103, CNS101, and pickupbalance adjustment step?Nochanges or DC shift occurs when the / button is
Yesflexible PWB insertion.TRYespressed.
Check the pins 52 and 53 of IC201, the pins 10, 12, 14, and 15Does focus access occur in focus gain rough adjustmentIs tracking servo applied in focus gain fine adjustment step?Check waveforms of pins 54 and 55 of IC201, pins 18, 19, 21,
step?Noof IC601,and the pins 5 and 7 of CNS101.NoOUBLE SHOOand 23 of IC601, pins 4 and 6 of CNS101.
Yes
Yes
Is slide servo applied in continuous playback step?Replace IC201.
Is adjustment out of allowable range?Check whether values of pins 10, 11, 14, and 15 of IC201, pinsNo
No30 and 32 of (IC101) (TP143) change when the / buttonYes
Yesis pressed.
Check item "Normal Playback".
Does the disc motor rotate in the same step?Check as stated in item "The disc motor does not rotate".
No
Yes
Is focus servo applied in tracking gain adjustment step?Check timing of pins 91 and 92 of IC401 and TP144(TEOUT).
No
Yes
Doesn't the disc motor rotate at high speed in the same step?Check EFM waveform of pin 23 of IC201 in case of high
Noreflection.TING
Check ADIP waveform of pin 4 of IC201 in case of low reflection.
Yes
Is tracking gain adjustment within allowable range in theCheck whether values of pins 16 to 19 of IC201 and
same step?NoTP144(TEOUT) change when the / button is pressed.
Yes
Is adjustment within allowable range in tracking errorCheck whether value of pin 20 of IC201 and TP144(TEOUT)
balance adjustment step?Nochanges or DC shift occurs when the / button is
pressed.
Yes
Is tracking servo applied in focus gain fine adjustment step?Check waveforms of pins 54 and 55 of IC201, pins 18, 19, 21,
Noand 23 of IC601, pins 4 and 6 of CNS101.
Yes
Is slide servo applied in continuous playback step?Replace IC201.
No
Yes
Is cluster address counted up continuously in the same step?Check waveforms of pins 53 to 56 of IC101 and pins 23 to 25 of
NoIC201. (In case of low reflection check also the waveform of pin
Yes4 of IC201.)
Continued on the next page. |
ACEC
KENWOOD
