Denon CEOL Piccolo DRA-N5, Руководство по обслуживанию

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2. No Sound, Noise generated
2.1. COMMON
Check Power Supply Voltages for PWM CONTROLLER.AMP
B'D
• [IC108] : 9,15,36,54pin
+3V3_5508 OK?
Check Power Supply Voltages for AMP IC.
AMP B'D
• [IC118] : 1,36,18,19pin
+12V_5142 OK?
• [IC118] : 21,26,29,34pin
+29V OK?
Check Reset signal for DIR.
AMP B'D
• [IC103] : 34pin DIR_RESET
"H" level O.K.?
Check Reset signal for PWM CONTROLLER.
AMP B'D
• [IC108] : 11pin RESET
"H" level O.K.?
Check Power Supply Voltages for DIR
AMP B'D
• [IC103] : 46pin +5V_A
• [IC103] : 22,36,42pin +3V3_D1
O.K.?
Check Soldering.
• [IC102] IN : +12V_A / OUT : +5V_A on AMP B'D
• [CP105] : 10,11pin +12V_A on AMP B'D
• [CN010] : 10,11pin +12V_A on B'D to B'D (CNT3)
• [CN007] : 9pin +12V_A on B'D to B'D (CNT3)
• [CN222] : 3pin +12V_A on SMPS B'D
• [IC401] IN : +5V_SMPS1 / OUT : +3V3_D1 on MAIN B'D
• [CN410] : 4,5pin +5V_SMPS1 on MAIN B'D
• [CN005] : 4,5pin +5V_SMPS1 on B'D to B'D (CNT1)
• [CN006] : 9,10pin +5V_SMPS1 on B'D to B'D (CNT1)
• [CN224] : 9,10pin +5V_SMPS1 on SMPS B'D
• [CP413] : 1pin +3V3_D1 on MAIN B'D
• [CN001] : 1pin +3V3_D1 on B'D to B'D (CNT2)
• [CN002] : 23pin +3V3_D1 on B'D to B'D (CNT2)
• [CP102] : 23pin +3V3_D1 on AMP B'D
Check Soldering.
• [R290 , R291 , R292 , +3V3_5508]
Check Soldering.
• [R241 , R242 , R243] : +12V_5142 on AMP B'D
• [CN101] : 4,5,6pin +29V on AMP B'D
• [CP105] : 5pin +12V_D on AMP B'D
• [CN010] : 5pin +12V_D on AMP B'D
• [CN007] : 10,11pin +12V_D on AMP B'D
• [CN222] : 1,2pin +12V_D on SMPS B'D
Check Soldering.
• [IC403] : 68pin DIR_RESET on MAIN B'D
Check Soldering.
• [IC403] : 77pin 5508_RESET on AMP B'D
NG
NG
NG
NG
NG
OK
OK
OK
OK
Check Reset signal for AMP IC.
AMP B'D
• [IC118] : 5,15pin VALID
"H" level O.K.?
Check Oscillation waveform.
AMP B'D
• [IC103] : 40pin XTO
24.576MHz OK?
Check Soldering.
• [IC108] : 39pin VALID on AMP B'D
Check Soldering.
• [XTAL101] on AMP B'D
NG
NG
OK
OK
OK