Harman Kardon Harman/kardon HK3490, Service Manual

Page: 29 / 108

5. Remove the Volume PCB (43-5), referring to the previous step 5.
6. Remove the POWER LED PCB (43-2), referring to the previous step 6.
7. Remove the Front input video PCB (43-6), referring to the previous step 7.
8. Remove 12 screws (S3) and then remove the Front PCB (43-1).
9 TUNER MODULE (34) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Disconnect the connector (CON1-Card cable) from connector (CN26) on the Input PCB (45).
3. Remove 2 screws (S5) and then remove the Tuner Module (47).
10 VIDEO PCB (43-8) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Disconnect the connector (CN85-Card cable) from connector (CN85) on the Input PCB (45).
3. Remove 4 screws (S8,S5) and then remove the Video PCB (43).
11 DSP PCB (46-1) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Disconnect the connector (CN51,52,71-Card cable) from connector (CN51,52,71) on Input PCB (45).
3. Disconnect the connector (CN51) from lead wire (BN51-11P) on the Tr PCB (46-2).
4. Remove 5 screws (S8,S5,S14) and then remove the DSP PCB (46-1).
12 INPUT PCB (46-1) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Disconnect the connector (CN21-Card cable) from connector (CN21) on the Main PCB (44-1).
3. Disconnect the connector (CN24) from lead wire (BN24-5P) on the Main PCB (44-1).
4. Remove 7 screws (S5,S14) and then remove the DSP PCB (46-1).
13 POWER TRANS (30) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Disconnect the connector (CN15,CN12) on the Trans PCB (43-7) from lead wire (BN15-3P,BN12-2P)
on the Main PCB (44-1).
3. Disconnect the connector (CN11,CN14,CN15) on the Main PCB (44-1) from lead wire (BN11-
3P,BN14-13P,BN15-3P) on the Trans PCB (43-7)
4. Remove 4 Trans screws (S15) and then remove the Power Trans (42).
14 MAIN PCB ASS’Y(44) REMOVAL
1. Remove the Top-cabinet, referring to the previous step 1.
2. Remove the Power Trans (43-7),referring to the previous step 13.
3. Remove the TUNER MODULE (34), referring to the previous step 9.
4. Remove the VIDEO PCB (43-8), referring to the previous step 10.
5. Remove the DSP PCB (46-1), referring to the previous step 11.
6. Remove the INPUT PCB (46-1), referring to the previous step 12.
7. Disconnect the connector (CN13) from lead wire (BN13-9P) on the Front PCB (43-1).
8. Disconnect the connector (CN73) from lead wire (BN73-5P) on the PHONE PCB (43-3).
9. Disconnect the connector (CN61) from Power cord(35).
10. Remove 15 screws (S5-7EA, S8-2EA,S14-3EA,S9-1EA,S10-1EA,S3-1EA) and then remove the
Main PCB ASS’Y(44).
29
HK3490
harman/kardon