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DAR-RD100, HTR-210SS - Sony Audio Service Manual (repair manual). Page 64

Read Sony DAR-RD100 / HTR-210SS Service Manual online

6-3
No 5.0VD
Is the Vcc(5.3V) 
supplied to Q120 Emittor?
Is the Q120 Base ‘H’? 
Check or Replace the Q120
NO
NO
YES
Check or Replace the D111
Check the PWR CTL “H”
signal from µ-com 
NO
NO
Check or Replace
the D125
Check the PWR CTL “H”
signal from µ-com 
YES
No 3.3V
Is there about 3.7V at the
IC152 pin1?
Is there about 3.3V~ 5V at
the IC152 pin4?
Check the IC152 and
Replace
YES
YES
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