It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again!
I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.
I am very grateful for this manual. Without it could not repair my receiver.
Text excerpt from page 8 (click to view)
DCR-PC109/PC109E
ENGLISH
2. POWER SUPPLY DURING REPAIRS
JAPANESE
In this unit, about 10 seconds after power is supplied to the battery terminal using the regulated power supply (8.4V), the power is shut off so that the unit cannot operate. This following two methods are available to prevent this. Take note of which to use during repairs. Method 1. Use the AC power adaptor. Method 2. Connect the servicing remote commander RM-95 (J-6082-053-B) to the LANC jack, and set the commander switch to the �ADJ� side.
3.
1 2 3 4 5 6 7 8 9
TO TAKE OUT A CASSETTE WHEN NOT EJECT (FORCE EJECT)
Remove the front panel section and cabinet (R) section. Remove the cabinet (upper) (G) assembly. Remove the lens section. Remove the rear panel assembly and control switch block (SS6800). Remove the EVF section. Open the VC-352 board. Remove the mechanism deck and the VC-352 board. Disconnect CN9102 (27P, 0.3mm) of VC-352 board. Supply +4.5V from the DC power supply to the loading motor and unload with pressing the cassette compartment.
Loading motor Disconnect the flexible board from CN9102 of VC-352 board.