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Troubleshooting Tips, continued
Product Symptom Chec k Actio n
Compa nion 3
series II
No Audio Make su re th e unit isn't
stuc k in st andby
At IC U301, p lace you r po sitive
prob e on pin 22 and the n egative
prob e on g round. Toggle t he
control pod b etwee n mute and
stand by by touchi ng the to p of the
control pod. Whe n the LED is
gree n, the voltmeter sh ould read
11Vdc. Whe n the LED is yellow,
the voltmeter sho uld re ad 0 Vdc.
Compa nion 3
series II
No Bass Che ck U3 Insert a 2 00 mVrms, 20 0Hz sig nal
into J30 2. Check U3, pin 10 for a
sign al going i nto the IC an d che ck
pin 14 for the sign al comi ng out. If
there is a sig nal goin g in b ut nothing
comin g out, repla ce U3 usi ng the
part num ber i n the Service Manual.
Compa nion 3
series II
Intermittent Audio
from Left or Right
Speakers
Che ck J3 07 With the sp ea kers conn ect ed and
an audi o so urce playin g, wi ggle the
spe aker conn ection s an d listen to
see if the aud io cuts o ut or
becomes intermittent. Bef ore
determi ning t he co nne ctors as a
failure, be sure to ins pec t the
spe aker cabl e for bro ken or
intermittent conne ction s. J30 2 is
non-re pairabl e; Repla ce th e module
assembly.
Compa nion 3
series II
No Audio o r Dea d
Unit
Che ck the Co ntrol Pod Che ck the pin s insi de the di n
con nector at the end of the control
pod cable to see if any pin s a
misshap ed, b ent or broken . Also,
insp ect J308 to make sure none of
the pins has brok en off. If the
control pod conne ctor i s defective,
repla ce it.
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