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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 :