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Great product, helped me to restore vintage walkman cassette.
Just some pictures could be little bit more sharp and contrast
Thank you
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I love older radio's and the service manuals that are sometimes hard to find. Was able to find a manual quite easily on this site.
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Thank you for your shop manual! Your help was very useful - the device is repaired! Once again - Thank you! I wish you a successful business! Edward (Russia).
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It was a great experience,instead of purchasing a new Stereo Amplifier ,in just minutes i repaired my old one and that was thaks to the manual I have purchased from you.
Thanks again.
Samuel Alter
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Das ging ja sehr unkompliziert hat bestens geklappt und die Quallität ist auch noch gut.
Vielen Dank dafür.
1-3. Switching Regulator Replacement 1-4. Fuse/IC Link Replacement
1-3. Switching Regulator Replacement
w Unplug the power supply cord before replacing the switching regulator. n Do not disassemble the switching regulator. 1. Remove the top plate. (Refer to Section 1-1-1.) 2. Raise the wiring clip. 3. Disconnect the connector (CN1). (Refer to Section 11-2.) 4. Remove the two screws (B3x8). 5. Remove the screw (BVTP3x10). 6. Remove the four screws fixing the connectors. 7. Remove the three screws (PSW3x6), then remove the CPU-321/CPU-323 board. 8. Remove the five solders fixing the switching regulator. 9. Remove the switching regulator from the CPU-321/ CPU-323 board.
Switching regulator CPU-321 /CPU-323 board PSW 3x6 Wiring clip PSW 3x6
1-4. Fuse/IC Link Replacement
w A fuse and an IC link is critical parts to safe operation. Replace this component with SONY parts whose part numbers appear in this manual published by SONY. If not, this may cause a fire or electric shock. Be sure to use specified component in this manual. The BKS-R3216/R1617/R1618/R3219/R3220/R1621/ R3240A/R3242A/R3248A has a fuse and an IC link for circuit protection. A fuse and an IC link will blow when abnormality occurs and an overcurrent flows in this equipment. Be sure to replace an old fuse and an IC link with the specified fuse or IC link as shown below after removing the foreign substances that may cause the shorts.
Board CPU-321 CPU-323 IF-803 Ref. No. F1 (A-2) F1 (A-2) PS1 (C-2) PS1 (A-2) Part name H.B.C fuse 2A, 250V H.B.C fuse 2A, 250V IC link, Chip 2A IC link, Chip 0.52A Part No. !1-576-228-11 !1-576-228-11 !1-533-282-21 !1-533-539-11
NOTE: The character in parentheses ( ) indicate the address on board.
Washer
Connector screws BVTP 3x10 B 3x8
n On installing the switching regulator, install it in the reverse order of the removal steps 1 to 9.
1-6 (E)
BKS-R3216/R1617/R1618 BKS-R3219/R3220/R1621 BKS-R3240A/R3242A/R3248A
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