Harman Kardon AVR 134 - Page 23

Symptom Cause and Remedy Ref No.
Sounds from Speaker when
Headphone’s connected.
A) NOT Supported Headphone Detect.
Push the Speaker On/Off Button (Speaker off).
Bass / Treble Control Failure. A) Volume IC check.
1. Resistor/Capacitor correction figure check.
(Bass)
2. Resistor/Capacitor correction figure check.
(Treble)
I.C 109
I.C 109 PIN No.(26, 27, 32, 33)
I.C 109 PIN No.(28, 34)
AMP Sound Dead.
1. “LEFT” Channel dead.
2. “RIGHT” Channel dead.
3. “CENTER” Channel dead.
4. “REAR” Channel dead.
A) Signal Mute TR’s inferior.
B) Connector disconnection & disjunction.
Change or close insertion of the connector.
C) Speaker wire’s disjunction.
Close insertion of the speaker wire.
D) Volume IC check.
1. I.C voltage check.(+7.5)V, (7.5)V
2. I.C control data check.
3. I.C signal IN/OUT check.
Q 105, 107, 109
CP(111)
I.C No. (109)
I.C Pin No. (30, 52)
I.C Pin No. (49, 50)
AC3/DTS Failure.
(DSP Sound Mode)
A) IC Regulator check.
DSP I/O +(3.3)V, DSP CORE +(1.2)V
CODEC +(5)V, CODEC +(3.3)V
B) DIR check.
1. OSC check.
2. BICK, LRCK, RDATA Check.
3. Micom interface Port Check.
C) DSP check.
1. LRCK check.
2. Micom interface Port Check.
3. SDATA 1, 2, 3, 4 Check.
D) D/A Check.
1. LRCK/BCK/SDATA check.
2. Signal out check.
REG101, REG102
I.C No.(112), REG100
I.C103
XTAL(100)
I.C Pin No. (15), (16), (14)
I.C Pin No. (21, 22, 31)
I.C Pin No. (102)
I.C Pin No. (12)
I.C Pin No. (3, 4, 14, 105, 107, 108,
110, 111)
I.C Pin No. (117, 116, 115, 113)
I.C No. (103)
I.C Pin No. (17, 18, 19)
I.C Pin No. (49, 47, 45, 43, 41, 39,
37, 35)
Video Output Dead. A) Video Regulator voltage check.
1. DC voltage check. +(12)V
B) Micom control data check.
C) Video Mute(MONITOR, V1 OUT) port check.
(IC101)
I.C No. (106)
I.C Pin No. (2, 3)
I.C Pin No. (17, 10)
Remote Controller Failure. A) Battery check.
B) RMC I.C & Resonator inferior.
1. μCOM I.C B+(3.3)V check.
2. REMOCON data check. I.C No. (101) / I.C Pin No.(62)
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