JBL HARMONY Service Manual
Also see for HARMONY: Owner's manualService manualSetup guide
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HARMONY SERVICE BULLETIN JBL9809Service Bulletin JBL9809 - September 1998 This is considered a Major repairTo: All JBL Service CentersModel: Harmony AM/FM, CD Compact Sound systemSubject: Sleep Mode Display BrightnessIn the event you receive a Harmony sound system with the complaint “the display is too dim in the Sleep mode”,perform the following modification:1) To access & detach the CD assembly, obtain JBL Service Bulletin #JBL9804 (Harmony DisassemblyProcedure) and follow steps 1 - 7.2) Remove the volume control knob by pulling it straight off; remove the 7/16” mounting nut and washer.3) To expose the Control PCB follow steps 1 - 5 only in the second section of the disassembly procedure.4) Unplug the upper connector near the “Snooze” button to be able to separate the two chassis halves;removing more connectors is not necessary.5) Lay the unit’s front half face down on a padded surface.6) Pry any beads of hot glue off and away from the 6 connecting tabs holding the Control board in place.7) Remove the (3) silver-colored screws holding the control board to the unit.8) Carefully pull the connecting tabs back one at a time; remove the Control board from the unit.9) Turn board display-side up. Locate R281 and change from a 100W to a 27W resistor - JBL part# A091270.10) Return Control board to unit and reconnect all tabs; follow all disassembly instructions in reverse order.11) Observe brightness of the unit’s display in Sleep mode, and test all other functions.Model Serial number120V Status ActionHarmony AC0022-01001toAC0022-03195Display too dim in Sleep Mode Replace R281 with 27WresistorHarmony AC0022-03196and above Modified by factory NONE REQUIRED9CD Player/Tuner Stereo System HARMONY |
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