Panasonic sa pm 4 eb service manual
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Extracted text from panasonic sa pm 4 eb service manual (Ocr-read)
Page 1
1 Troubleshooting Flowchart (CD Section Circuit) CD can not playback Disc rotating TOC reading IC7001 Pin45 TP50 IC7001 Pin24 (TRP) R7331 (22K) & R7323 (3.3K) Not connect or cut Display shows PLAY IC7001 Pin71, 63, 64 IC7001 Pin52, 56, 59 IC7001 NG IC7002 NG IC7001 NGIC7001 NG Check main unit NO NO NO YES YES NO outputOutput OKOK OK Output NG Playing time appear on the display screen.Can not access IVPP output level Pin71: BLKCLK Pin63: LRCK Pin64: SR DATA NG 2 SA-PMX2E / SA-PMX2EG / SA-PMX2DBEB / SA-PM4DBE B / SA-PM4E / SA-PM4EB / SA-PM4EG
Page 2
Take off clamper & test disc One time, after moving to inner, moves 2~3mm to outer track Laser pickup movement Laser move up & down Laser diode blinking R7601 voltage at terminalsR7601 voltage at terminals Test disc IC7002 Pin11, 12IC7002 Pin13, 14 IC7002 Pin15, 16 output IC7001 Pin25 (FOP)CN7002 Pin2 (RESET_SW)CN7002 Pin2 (RESET_SW) IC7001 Pin23 (TRV) Spindle motor NG IC7002 NGIC7001 NG IC7001 NG IC7002 NG IC7002 NGTraverse unit NG Laser pick-up NG (Laser diode NG) Q7601 NG or Laser pick-up NGLaser pickup NGLaser pick-up NGLaser pick-up position Inner track limit switch (S7201) NG OpenInner track limit switch (S7201) Short Q7601 voltage Change all non CD functions to CD Change all non CD functions to CDNot moving Outer track, or middle Inner track NO Above 0.2V Above 0.4V Above 0.6V Below 0.2VBelow 0.4V Below 0.6V YES YESNONGL H NGNG OK OKOK OK NG NG 3 SA-PMX2E / SA-PMX2EG / SA-PMX2DBEB / SA-PM4DBE B / SA-PM4E / SA-PM4EB / SA-PM4EG FLE07 06