DOWNLOAD Panasonic SA-BTT770EG / SA-BTT770EP / SA-BTT775EB / SA-BTT775EE / SA-BTT775GN / SC-BTT775EEK Service Manual ↓ Size: 20.46 MB | Pages: 127 in PDF or view online for FREE

113

Step 3 Remove 1 screw from the Thermal Diode (D5802).
Step 4 Remove the Thermal Diode (D5802) from SMPS P.C.B..
Caution: Avoid touching the Heatsink B due to its high 
temperature after prolonged use. Touching it may lead to 
injuries.
Note: Refer to the diagrams of SMPS P.C.B. (Item 18.5) for
location of the part.

Step 1 Apply Grease to the back of Thermal Diode (D5802).
Step 2 Fix & screw the Thermal Diode (D5802) to the Heatsink
B.
Caution: Ensure that Thermal Diode (D5802) is tightly 
screwed to the Heatsink B.

Step 3 Solder pins of the Thermal Diode (D5802) on the solder
side of SMPS P.C.B..

114

• Refer to “Disassembly of Top Cabinet.”.
• Refer to “Disassembly of SMPS P.C.B.”

Step 1 Place an insulated material under SMPS P.C.B..
Step 2 Desolder pins of the Regulator Diode (D5803) on the
solder side of SMPS P.C.B..

Step 3 Remove 1 screw from the Regulator Diode (D5803).
Step 4 Remove the Regulator Diode (D5803) from SMPS
P.C.B..
Caution: Avoid touching the Heatsink B due to its high 
temperature after prolonged use. Touching it may lead to 
injuries.
Note: Refer to the diagrams of SMPS P.C.B. (Item 18.5) for
location of the part.

Step 1 Apply Grease to the back of Regulator Diode (D5803).
Step 2 Fix & screw the Regulator Diode (D5803) to the Heat-
sink B.
Caution: Ensure that Regulator Diode (D5803) is tightly 
screwed to the Heatsink B.

Step 3 Solder pins of the Regulator Diode (D5803) on the sol-
der side of SMPS P.C.B..

115

The Illustration in the section shows the image of SA-
BTT770EG/EP, SA-BTT775EB/GN
Note: For description of the disassembly procedures, see
the Section 10.

Step 1 Remove the Top Cabinet. 
Step 2 Lift up the Himelon.
Step 3 Remove 1 Rivet.
Step 4 Detach 11P FFC at the connector (CN1101) on Digital 
P.C.B..
Step 5 Detach 3P Wire at the connector (P59300) on Digital 
P.C.B..
Step 6 Detach 4P Shield wire unit at the connector (P59303) on 
Digital P.C.B..
Step 7 Remove 4 screws.

Step 8 Remove 9 screws.
Step 9 Remove 2 screws. (All except SA-BTT775EE)

Step 10 Release the tabs at both side of the Rear Panel in the
direction of arrow.

Step 11 Remove Digital P.C.B. Shield.

Step 12 Proceed to check & repair side B of Digital P.C.B..

116

Step 1 Remove Top Cabinet.
Step 2 Remove the Digital P.C.B..
Step 3 Connect 4P FFC at the connector (P55006) on Digital 
P.C.B..
Step 4 Connect 45P FFC at the connector (P55001) on Digital 
P.C.B..
Step 5 Connect 5P FFC at the connector (P55007) on Digital 
P.C.B..
Step 6 Connect 5P FFC at the connector (P55008) on Digital 
P.C.B..
Step 7 Connect 5P Cable at the connector (CN2001) on Digital 
P.C.B..
Step 8 Connect 22P Cable at the connector (CN2000) on Digi-
tal P.C.B..

Step 9 Place Digital P.C.B. under an insulated material.
Step 10 Connect 10P Extension FFC (RFKZBTT270K2) from 
CN2004 to JW2.
Step 11 Connect 13P Extension FFC (RFKZBTT270K1) from 
CN2002 to P6001.
Step 12 Connect 18P Extension FFC (RFKZBTT270K3) from 
CN5402 to CN2006.
Step 13 Proceed to check & repair Side A of Digital P.C.B..