Harman Kardon AVR 635 Owner's Manual page 54

TROUBLESHOOTING GUIDE
SYMPTOM CAUSE SOLUTION
Unitdoesnotfunction whenMain • NoACPower • Makecertain AC power cordis plugged into
Power Switchis pushed a liveouflet
• Check to seewhether o utlet i s switchcontrolled
Display l ights, b ut no sound • Intermittent inputconnections • Makecertain thatall inputandspeaker c onnections
or picture aresecure
• Mute ison • PressMute Button
• Volume contiolis down • Turnupvolume control
Unitturnson,but frontpanel * Display b rightness i sturnedoff • Follow the instructions inthe Display Brightness section
display doesnot lightup on page39 sothatthedisplay is setto VF ]) F UL L
Nosound fromanyspeaker; * Amplifier i s inprotection mode • Check speaker w ireconnections f orshortsat receiver a nd
lightaroundpower switchis red dueto possible short speaker e nds
• Amplifier i s inprotection mode • Contact y ourlocalHarman Kardon service center
dueto internal p roblems
Nosound fromsurround or * Incorrect surround mode • Selecta modeotherthanStereo
centerspeakers * Input i s monaural • Thereis nosurround information f rom monosources
• Incorrect configuration • Check speaker m odeconflgulation
• Stereoor Monoprogram material • Thesurround decoder m aynot createcenter- o r reanchannel
information % m nonencoded programs
Unitdoesnotrespond to * Weakbatteries inremote • Change remote batteries
remote commands * Wrongdeviceselected • Press theAVRselector
• Remote sensor i s obscured • Makecertain front-panel sensorisvisible to remote
or connectremote sensor
Intermittent buzzing intuner * Local i ntederence • Moveunitor antenna away floracomputers, fluorescent
lights, m otorsor otherelectrical appliances
Letters flashin thechannel i ndicator • Digital audiofeedpaused • Resume playtorDVD
display anddigital a udiostops • Check thatDigital I nput i s selected
Fandoesnotappear t o operate • Additional coolingmaynot berequired • Thefan isactivated onlywhenadditional coolingis required dueto
highinternal temperature, it is normal f or thefanto beinactive at
normal v olume levels.
inaddition to the itemsshownabove, a dditional intormation o n troubleshooting possible problems withyourAVR635, or installation r elated issues, m aybe foundinthe listof
"Frequently AskedQuestions" whichis located inthe Product S upport s ection of ourWebsiteat www.harmankardon.com.
Processor Reset
inthe rarecasewhere the unit'soperaSon or the dis
plays seemabnormal, thecausemayinvolve theerratic
operaSon of tne system's m emory or microprocessor.
Tocorrect t hisproblem, firstunplug the unitfromthe
ACwalloutletandwaitat least3 minutes. Afterthe
pause, r econnect theAC power cordandcheckthe
unit'soperation. If thesystem stillmalfunctions, a
system resetmaydearthe problem.
Toclearthe AVR635's enllresystemmemory includ-
ingtunerpresets, outputlevel s ettings, delaytimesand
speaker c onfiguration data,firstputthe unitinStandby
by pressing t he Standby/OnSwitch Ell Next,press
andholdthe SurroundMode GroupSelector[]
andthe TuningMode Selector[] buttons forthree
seconds.
Theunitwill turnon automatically anddisplay the
RE SE 1"message inthe UpperDisplayLine [],
NOTE: R esetting t heprocessor w illeraseanyconfigu-
rationsettings youhavemadeforspeakers, output
levels, s urround modes, d igital i nputassignments as
wellas thetunerpresets. Aftera reset t he unitwillbe
returned t o the facton/presets, andall seltings for
theseitemsmustbe reentered.
Ifthe system is stilloperallng incorrecfly, theremay
havebeenanelectronic d ischarge o r severn AC line
interterence thathascorrupted t he memory or
microprocessok
Ifthesestepsdo notsolvetheproblem, c onsult a n
autnorized Harman Kardon service center.