No Sound, Noise Generated - Denon RCD-N8 Service Manual

2. No Sound, Noise generated

2.1. COMMON
Check Power Supply Voltages for DIR.
MAIN B'D
• [IC103] : 46pin
• [IC103] : 22,36,42pin
O.K.?
Check Power Supply Voltages for PWM CONTROLLER.AMP B'D.
MAIN B'D
• [IC108] : 9,15,36,54pin
VDD +3.3V OK?
Check Power Supply Voltages for AMP IC.
MAIN B'D
• [IC118] : 1,36,18,19pin
GVDD +12V OK?
• [IC118] : 21,26,29,34pin
PVDD +29V OK?
Check Reset signal for DIR.
MAIN B'D
• [IC103] : 34pin DIR_RESET
"H" level O.K.?
Check Reset signal for PWM CONTROLLER.
MAIN B'D
• [IC108] : 11pin RESET
"H" level O.K.?
Check Reset signal for AMP IC.
MAIN B'D
• [IC118] : 5,15pin VALID
"H" level O.K.?
Check Oscillation waveform.
MAIN B'D
• [IC103] : 40pin TXO
24.576MHz OK?
Check Oscillation waveform.
MAIN B'D
• [IC108] : 19pin XTL_O
13.5MHz OK?
• [IC108] : 63pin MCLK
MCLK OK?
+5V_A
+3V3_D1
OK
OK
OK
OK
OK
OK
OK
OK
Check Soldering.
NG
• [IC102] : IN : +12V_A / OUT : +5V_A
• [IC401] : IN : +5V_SMPS1 / OUT : +3V3_D1
• POWER B'D
NG
Check Soldering.
• [R238,R239,R240] : +3V3_5508
Check Soldering.
• [R241,R242,R243] : +12V_5142
NG
• [CN408] : 1pin : +12V_D
• [CN101] : 1,2,3pin : +29V
• POWER B'D
NG
Check Soldering.
• [IC403] : 68pin DIR_RESET on MAIN B'D
NG
Check Soldering.
• [IC403] : 77pin 5508_RESET on MAIN B'D
NG
Check Soldering.
• [IC108] : 39pin VALID on MAIN B'D
NG
Check Soldering.
• [XTAL101] on MAIN B'D
Check Soldering.
NG
• [XTAL102] on MAIN B'D
• [IC41] : 17pin 5508_MCLK on MAIN B'D
45