DMC-G7R(k)
COVER(
98.4.24
It is advisable to use the TEST mode (refer to Error Data Display Mode, P15) indicating the causes of troubles before
Y Abnormal display2:19
starting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is useful
for repair.
Is waveform output from CNS 402 pins 1 to 3?Is waveform output from IC 401 pins 13 to 15?
When does not functionAre the pin7 (VCC) and pin 6 (GND) normal?No
PM
When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.CleanYesNo
the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check
the following items.Check between IC401 andCheck the periphery of IC401.y[W
Remove the cabinet and follow the troubleshooting instructions.CNS402.
"Track skipping and/or no TOC(Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens.Yes
Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below." 10
Check for pattern breakage of flexible PWB, check for
Turn the power off.defects of display microcomputer (replace the display unit).
Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol.
Do not touch the lens with the bare hand.
Y Playback state cannot be set
Is the power supply turned on when the remote controlPerform the check stated in item "Power is not turned on
button or main unit button is pressed?Nowhen the PLAY button is pressed".
Is playback state unsettable for high reflection disc and lowProceed to "Test mode check".
Yesreflection disc?YesTR
No
Does the display operate normally?Perform the check stated in item "Abnormal display".
No
YesOUBLE SHOO
Only the high reflection disc cannot be played back.
Is playback state set?Perform the check stated in item "Playback state connot beYes
Noset".
Yes
Is the pin 46 of IC401 in L state when the high reflection discCheck SW902, mechanism flexible PWB and CN601.
No
Is audio output normal?Perform the check stated in item "Audio playback circuit".is inserted?
NoIs the pin 51 of IC401 and pin 23 of IC101 in L state?
Yes
Yes
Is recording/playback operation normal?Perform the check stated in item "Recording/playback
Nooperation".
Proceed to "Test mode check".
Y Power is not turned on when the / button
is pressed.
Only the low reflection disc cannot be played back.
Is power turned on when the remote control button is
YesTING
pressed?
Is the pin 46 of IC401 in L state when the high reflection discCheck SW902, mechanism flexible PWB and CN601.
Nois inserted?No
Is the pin 51 of IC401 and pin 23 of IC101 in L state?
Is operation normal when the main body button is pressed? Check the periphery of remote controller and main unitYes
Yesheadphone terminal (J703) and IC401.
NoProceed to "Test mode check".
Is the pin 26 of IC401 in H state?Check the position of Hold switch.
No
YesDMC-G7R
Are IC401 pin 50 set to "L"?Check the DISC IN (SW904) switch of mechanism PWB.
No
Yes
Is clock supplied to the pins 83 and 86 of IC401?Check that voltage is applied to the periphery of IC403.
No
Yes
Is 2.5V applied to TP201?Check whether there is solder touch of part connected to
Nothe +2.5V line.
5 |
ACEC
