When I test the transistors the shows pnp or npn then it gives the pin order like ecb then the meter shows the letter k and nothing else when testing in the hfe mode. So what does that mean.
I do not know what the K means on your tester.
Important. Read carefully.
The schematic (6) shows Q658 & Q661 as
PNP and Q659 & Q660 as
NPNThe 2SC3423 is NPN but TO-220 package (Q659 & Q660)
The 2SC1306 is NPN and TO-126 package (Q658 & Q661)
Should be PNPPlease check part numbers again, this is very wrong.
There must be 2 PNP and 2 NPN.
We must identify these 4 transistors correctly.
Should also be the same package for all 4 transistors.