Related Manuals for NAD C 445
Summary of Contents for NAD C 445
- Page 1 C 445 FM / AM DAB TUNER...
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Page 2: Product Safety Servicing Guidelines
PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE WITHOUT MANUFACTURER’S APPROVAL. UNAUTHORIZED EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. - Page 3 Page 3 of 28...
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Page 4: Specifications
SPECIFICATIONS FM SECTION Frequency Range: 87.50 MHz to 108.00 MHz (50 kHz steps) Signal-to-Noise Ratio: 65dB (Mono) 60dB (Stereo) Presets: AM SECTION Frequency Range: 522 kHz to 1620 kHz (9 kHz steps) Signal-to-Noise Ratio: 35dB Presets: DAB SECTION Band lll: 174MHz - 240MHz Band L : 1452MHz - 1492MHz... -
Page 5: Troubleshooting
TROUBLESHOOTING This unit is designed for trouble-free operation. Most problems users encounter are due to operating errors. If you have a problem, first check this list for a possible solution. If the problem persists, consult your authorized Service Centre. Symptom Cause/Correction No lights appear when System Power button is pressed Unit is plugged into a live outlet. -
Page 6: Maintenance Flowchart
MAINTENANCE FLOW CHART Start Power on Voltages 1. Check Cable at pins of connector 2. Replace Power Supply unit if Power Board is not shorted, (CN93) are normal? otherwise find out first where the short is. Check CNVMB114MA18L Are FM/AM Is Power Supply (Tuner Module) MAIN Board... - Page 7 Page 7 of 28...
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- Page 13 FP2 Relay (RT21) Terminal assignment Relay - top view Non-latching type, Latching type, latching, 2 coils not energized condition reset condition reset condition BLOCK DIAGRAM (IC22, IC23, IC24: OP AMP) OPA2134 Out A –In A Out B +In A –In B V–...
- Page 14 HEX INVERTER (IC73: 74ACT04) INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL NAME AND FUNCTION 1, 3, 5, 9, 11, 1A to 6A Data Inputs 2, 4, 6, 8, 10, 1Y to 6Y Data Outputs Ground (0V) Positive Supply Voltage TRUTH TABLE PIN CONNECTION AND IEC LOGIC SYMBOLS Page 14 of 28...
- Page 15 Terminal Functions (IC21: PCM1796) TERMINAL DESCRIPTIONS DESCRIPTIONS NAME AGND1 − Analog ground (internal bias) AGND2 − Analog ground (internal bias) AGND3L − Analog ground (L-channel DACFF) AGND3R − Analog ground (R-channel DACFF) Bit clock input (1) Serial audio data input (1) DATA DGND −...
- Page 16 FUNCTIONAL BLOCK DIAGRAM (IC21: PCM1796) I OUT L− LRCK Current V OUT L Segment DATA Audio I OUT L+ Data Input I/V and Filter V COM L Oversampling Advanced Digital Bias I REF Segment Filter V COM R Vref Modulator Function Control I OUT R−...
- Page 17 PIN ASSIGNMENTS(IC21: PCM1796) PCM1796 (TOP VIEW) ZEROL ZEROR AGND3L MSEL L− LRCK DATA AGND2 DGND AGND1 R− AGND3R Page 17 of 28...
- Page 18 RESET IC (RE5VL28CATZ) : IC72 Page 18 of 28...
- Page 19 IC71 FUNCTION (MI-COM S3F84BB) Pin No. PIN NAME DESCRIPTION FIP-DA FIP Data output port Non connection SINO UART Data input port SOTO UART Data output port VDD1 Power supply port(+5V) VSS1 XTOUT 10MHz crystal connection port TEST Back-up Input 17,18 Non connection RESET Reset input port("L")
- Page 20 BLOCK DIAGRAM (IC71: S3F84BB) P0.0-P0.7 P1.0-P1.7 Port 0 Port 1 OSC/RESETB Port 2 P2.0-P2.7 RESETB I/O Port and Interrupt Control 8-Bit Basic Timer P2.7/TAOUT 8-Bit P2.6/TACAP Port 3 P3.0-P3.7 Timer P2.5/TACK /CounterA,B P2.4/TBOUT SAM88RC CPU 8-Bit P3.7/TCOUT0 Timer/ P3.6/TCOUT1 CounterC0,C1 P4.0-P4.7/ Port 4 INT0~INT7...
- Page 21 PIN ASSIGNMENT (IC71: S3F84BB) P2.7/TAOUT P8.0 P2.6/TACAP P8.1 P2.5/TACK P8.2 P2.4/TBPWM P8.3 P2.3/DAOUT P8.4/INT8 P2.2/SCK P8.5/INT9 P2.1/SI P6.0 P2.0/SO P6.1 P5.7 P6.2 P5.6/SDAT P6.3 P5.5/SCLK P6.4 S3C84BB/F84BB VDD1 VDD2 VSS1 VSS2 (80-QFP-1420C) XOUT P6.5 P6.6 TEST P6.7 P5.4 P7.0/ADC0 P5.3/RxD0 P7.1/ADC1 P7.2/ADC2 RESETB...
- Page 22 HEX INVERTER (IC74: 74LVC04A) PIN CONFIGURATION PIN DESCRIPTION PIN NUMBER SYMBOL NAME AND FUNCTION 1, 3, 5, 9, 11, 13 1A to 6A Data inputs 2, 4, 6, 8, 10, 12 1Y to 6Y Data outputs Ground (0 V) Positive supply voltage SV00396 LOGIC SYMBOL LOGIC DIAGRAM (ONE GATE)
- Page 23 TRANSISTOR, REGULATOR IC BLOCK DIAGRAM TO-92 TO-220FP TO-92L 1. Emitter 1. Emitter 1. GND 2. Collector 2. Collector 2. INPUT 3. Base 3. Base 3. OUTPUT 1 2 3 12 3 KTC2874 KTC2316 L7912CP TO-220FP TO-92M 1. INPUT 1. Emitter 2.
- Page 24 ELECTRICAL PARTS LIST RESISTORS AND CAPACITORS Notes : Parts numbers are indicated for most mechanical parts. Please use this part number for parts order. IMPORTANT SAFETY NOTICE. Components identified by ! Mark have special characteristics important for safety. When replacing any of these components, use only manufacture's specified parts. The unit of resistance is OHM (Ω) k=1000 (Ω) , M=1000 (kΩ) The nuit of capacitance is MICROFARAD (uF)
- Page 25 C226 , C227 HCQI1H822JZT CAP , MYLAR 0.0082UF 50V C228 HCQI1H273JZT CAP , MYLAR 0.027UF 50V C229 , C230 HCQI1H822JZT CAP , MYLAR 0.0082UF 50V C231 CCFT1H104ZF CAP , SEMICONDUCTOR 0.1UF 50V C232 , C233 CCEA1CH221T CAP , ELECT 220UF 16V C234 CCFT1H104ZF CAP , SEMICONDUCTOR...
- Page 26 Q901 HVTKSC2316YT KSC2316Y Q902 HVTKRC107MT KRC107M R201 CRD20TJ220T RES , CARBON 22 OHM 1/5W J R203 CRD20TJ103T RES , CARBON 10K OHM 1/5W J R204 , R205 CRD20TJ3R3T RES , CARBON 3.3 OHM 1/5W J R206 ~ R210 CRD20TJ103T RES , CARBON 10K OHM 1/5W J R211 , R212 CRD20TJ911T...
- Page 27 CMY1A025 HEAT SINK CTB3+8JR SCREW HVINJM7805FA NJM7805FA K8AYG6260 COMPOUND , SILICONE IC92 CVINJM7805FAXA I.C ASS'Y CMY1A025 HEAT SINK CTB3+8JR SCREW HVINJM7805FA NJM7805FA K8AYG6260 COMPOUND , SILICONE IC93 HVIL7912CP I.C , REGULATOR L7912(ST) IC94 HVIL7812CP I.C , REGULATOR L7812(ST) IC95 HVINJM7805FA NJM7805FA IC96 HVIRC1117S33...