Service Manuals, User Guides, Schematic Diagrams or docs for : NAD L L-53 nad_L53SM

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L 53 PRELIMINARY
SERVICE MANUAL
MAY 2005
                                                               SUBWOOFER MUTING

Install diode on the main board (component side), solder to resistor R689 (figure 1) with a long wire
connected to resistor R903 on the standby power-supply board (foil side), see figure 2

NEW DIODE 1N4148 CATHODE FACING R689                                     WIRE FROM DIODE ANODE




Figure 1 CUP11734-1
                                                                         Figure 2 CUP11732-6



               CUP11734-1                                   CUP11732-6


                                            ST_M
                            To CUP11734-1
                            R689
                                                   1N4148




To R903 on CUP11732-6
                               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 ()
           k=1000 () , M=1000 (k)
         The unit of capacitance is MICROFARAD (uF)
           P=10-6 uF
 Numbering System of Resistor
Example
CRD                25            F                  J              101
Type           Wattage         Shape         Tolerance            Value
       Resistor Type                    Wattage                              Tolerance
K[C]RD : Carbon            20 : 1/5W                          F : 

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