45
Check Power Supply Voltages for DIR.
MAIN B'D
• [IC103] : 46pin
+5V_A
• [IC103] : 22,36,42pin
+3V3_D1
O.K.?
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 Power Supply Voltages for PWM CONTROLLER.AMP B'D.
MAIN B'D
• [IC108] : 9,15,36,54pin
VDD +3.3V 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?
Check Soldering.
• [IC102] : IN : +12V_A / OUT : +5V_A
• [IC401] : IN : +5V_SMPS1 / OUT : +3V3_D1
• POWER B'D
Check Soldering.
• [R238,R239,R240] : +3V3_5508
Check Soldering.
• [IC403] : 68pin DIR_RESET on MAIN B'D
Check Soldering.
• [IC403] : 77pin 5508_RESET on MAIN B'D
Check Soldering.
• [IC108] : 39pin VALID on MAIN B'D
Check Soldering.
• [XTAL101] on MAIN B'D
Check Soldering.
• [XTAL102] on MAIN B'D
• [IC41] : 17pin 5508_MCLK on MAIN B'D
Check Soldering.
• [R241,R242,R243] : +12V_5142
• [CN408] : 1pin : +12V_D
• [CN101] : 1,2,3pin : +29V
• POWER B'D
NG
NG
NG
NG
NG
NG
NG
NG
OK
OK
OK
OK
OK
OK
OK
OK
2. No Sound, Noise generated
2.1. COMMON
Summary of Contents for CEOL RCD-N8
Page 10: ...10 DIMENSION 299 0 112 0 108 0 35 0 35 0 210 0 280 0 2 0 301 0 218 0 45 0 36 0 30 0 4 0 ...
Page 22: ...22 3 Remove the screws 4 Remove the screws Shooting direction C Shooting direction A ...
Page 24: ...24 4 Remove the screws remove the connector wires CN221 CN222 Shooting direction C ...
Page 84: ...84 PCM9211 MAIN IC103 ...
Page 85: ...85 PCM9211 Block Diagram ...
Page 86: ...86 PCM9211 Pin Discriptions ...
Page 87: ...87 NJM2755 MAIN IC701 NJM2755 Block Diagram ...
Page 93: ...93 L6565 SMPS IC821 L6565 Block Diagram ...
Page 94: ...94 ICE3BR1765J SMPS IC871 ICE3BR1765J Block Diagram ...