27
2. No Sound,Noise generated
2.1. AM/FM TUNER-in (N Version)
Check Power Supply Voltages for AM/FM TUNER.
MAIN B'D
• [CN31] : 4pin +9V
• [BN93] : 5pin +12V
Check Analog Audio Data output from TUNER PACK.
MAIN B'D
• [TUNER PACK] output and [CN31]
: 7,5pin TUNER_L_IN, TUNER_R_IN
• [IC23] : 60,61pin
Check Soldering.
• [BN93] : 5pin +12V on MAIN B'D
• AUDIO B'D
Check Parts
• [IC26]
Check Soldering.
• [CN31]
: 7,5 pin TUNER_L_IN, TUNER_R_IN on MAIN B'D
• [C241],[C242] on MAIN B'D
NG
NG
OK
OK
A
A
2.2 . DAB TUNER-in (N Version)
Check Power Supply Voltages for DAB TUNER.
MAIN B'D
• [CN10] : 9pin +3.3V
DAB B'D
• [CN10] : 3pin +3.3V
Check Power Supply Voltages for DAB TUNER.
DAB B'D
• +3.3V [IC92] : 3pin +1.2V OK?
• [CN32] : 2pin +3.3V
• [CN32] : 1pin +1.2V
Check Digital Audio Data output from DAB TUNER.
MAIN B'D
• [CN10] : 5pin DAB_SPDIF
• [IC23] : 6pin DAB_SPDIF
DAB B'D
• [CN32] : 20pin DAB_SPDIF
• [CN10] : 7pin DAB_SPDIF
Check Soldering.
• [CN10] : 9pin +3.3V on MAIN B'D
• [IC105] : SW. Regulator on MAIN B'D
• [CN10] : 3pin +3.3V on DAB B'D
Check Soldering.
• [IC92] on DAB B'D
• [CN92] on DAB B'D
Check Soldering.
• [CN10] : 5pin DAB_SPDIF on MAIN B'D
• [CN23] : 6pin DAB_SPDIF on MAIN B'D
• [CN32] : 20pin DAB_SPDIF on DAB B'D
• [CN10] : 7pin DAB_SPDIF on DAB B'D
NG
NG
NG
OK
OK
OK
2.3. OPTICAL IN
Check Digital Audio Data from OPTICAL Input IC
MAIN B'D
• [CN902] : 5,6pin OPT_IN
• [CN23] : 2pin OPT/COAX_IN
Check Power Supply Voltages for OPTICAL Input IC.
MAIN B'D
• [JK92] : 3pin +3.3V
Check Soldering.
• [JK92] : 3pin +3.3V
• [IC505] : SW. Regulator on MAIN B'D
Check Soldering.
• [IC903] [IC902] on MAIN B'D
• [IC41] OPT/COAX_IN on MAIN B'D
NG
NG
OK
OK
A
