Harman Kardon AVR-133 - Page 11

Ref No.
Cause and RemedySymptom
1. µ-COM I.C B+( 3.3 )V check.
2. REMOCON data check. I.C NO. (101) / I.C Pin No. ( 62)
FM Failure. A) FM MUTE adjustment inferior.
B) FRONT-END inferior.
C) FM DET COIL inferior.
D) PLL&MPX IC check.
1. PLL&MPX I.C B+( 5 )V,B+( 3.3 )V check. I.C NO. (1 ) / I.C Pin No. ( 8,21 )
2. PLL control data check. (Data/CE/Clock)
E) TUNER B+ voltage inferior.
F) µ-COM I.C & Resonator inferior. I.C No. ( 101 )
1. µ-COM I.C B+( 3.3 )V check.
2. Micom control data check. I.C Pin No. ( 20,23,24,60,61)
AM Failure. A) PLL&MPX IC check.
1. PLL&MPX I.C B+( 5 )V,B+( 3.3 )V check. I.C NO. (1 ) / I.C Pin No. ( 8,21 )
2. PLL control data check (Data/CE/Clock)
B) TUNER B+ voltage inferior.
C) AM OSC COIL inferior.
D) µ-COM I.C & Resonator inferior. I.C No. (101 )
1. µ-COM I.C B+( 3.3)V check.
2. Micom control data check. I.C Pin No. ( 20,23,24,60,61)
Stereo Effect Failure. A) FM DET COIL Inferior.
Stereo does not light up. B) PLL&MPX IC check.
1. PLL&MPX I.C B+( 5 )V,B+( 3.3 )V check.
2. MPX control data check.
C) µ-COM I.C & Resonator inferior. I.C No. ( 101 )
1. µ-COM IC B+( 3.3)V check
2. Micom control data check. I.C Pin No. ( 20,23,24,60,61)
Tuner Sound Dead. A) Connector's disconnection or disjunction.
1. "L / R" Channel dead. Change or Close insertion of the connector.
2. "LEFT" Channel dead. B) FM DET COIL inferior.
3. "RIGHT" Channel dead. C) AM IFT COIL inferior.
D) PLL&MPX IC check.
1. Signal IN/OUT terminal.
2. I.C driving voltage check. ( +5V,+3V3 ) I.C NO. (1 ) / I.C Pin No. ( 8,21 )
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