Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
IF PRINTED CIRQUIT BOARD WIRING VIEW WAS ONE TONE LIGHTER, THEN 5 STAR RANK HAS TO BE MY CHOISE.
Text excerpt from page 67 (click to view)
AVIC-S1 PDA Maintenance
5. Remove two screws that secure the speaker, then desperate the speaker. (Figure 4-3)
Figure 4-3 Remove two screws
Reassembly 1. Replace the speaker and secure with two screws. 2. Reconnect the speaker cable to the main board. 3. Make sure the rear cover ASSY is assembly correctly, and secure with four screws. 4. Insert the SD/MMC card back.