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Great PDF easy to read good info needed for replacment of belts and assembly and specs.
complete and unabridged very good quality
easy to download.
recieved in two days.
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.
perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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.
1. How to enter test mode
While holding the FM key and PRESET 6 keys, reset the unit. All display segments light up when the test mode is entered.
6. AUDIO function â¢ Audio-related specifications
â¢ A short press of the Q key initiates the audio adjustment mode. â¢ Pressing the OPEN/CLOSE key on the remote controller initiates the audio adjustment mode. â¢ Continuous holding of a remote control key is inhibited. â¢ Bass, Middle and Treble are adjusted in 3 steps of -8 / 0 / +8 with the Track Up/down keys (default is 0). â¢ Balance is adjusted in 3 steps of Left L15 / 0 / R15 Max with the Track Up/down keys (default is 0). â¢ Loudness : OFF
2. How to exit from test mode
Reset the unit. Turning ACC off, power off, momentary power down or panel detaching does not terminate the test mode.
3. Initial status in the test mode
â¢ Sources : ALL OFF (STAND BY) â¢ Display : All segments were lit. â¢ Volume : -10dB (displayed as â30â) â¢ Loudness : OFF â¢ CRSC : OFF regardless of the presence of switching function. â¢ Aux : ON
7. MENU function â¢ Menu-related specifications
â¢ A short press of the PLAY/PAUSE key initiates the Menu mode. â¢ Pressing the DNPP key on the remote initiates the Menu mode. â¢ Continuous holding of a remote control key is inhibited.
4. TUNER function â¢ Forced switching of K3I
Each press of the Preset 6 key in Tuner mode should switch K3I from AUTOâForced WideâForced MiddleâForced NarrowâAUTO. The initial status is AUTO and the display shows these modes as follows. â¢ AUTO : A â¢ Forced Wide : M â¢ Forced Middle : M â¢ Forced Narrow : N
8. OTHER â¢ Special display when the display is all on
Pressing the Preset keys while the power is ALL OFF displays the following information.
[PRESET 1] [PRESET 2] [PRESET 3] Version display (Month/Day/Hour/Minute) ALL segment light up for FL display Short press : Display CD operation time. Long press/hold : Clear CD operation time [PRESET 5] Short press : Display CD ejection count. Long press/hold : Clear CD ejection count. [FM] ROM correction version. If not mounting ROM correction chip set display shows ROM No___
â¢ RDS check
PCON is power off when RDS data (âRDS testâ) received for TUNER mode.
5. CD function â¢ Test mode specifications of the CD receiver
â¢ Each press of the Track Up key jumps to the following track numbers : No. 9âNo. 15âNo. 10âNo. 11âNo. 12âNo. 13âNo. 22 âNo. 14âNo. 9 (The cycle restarts from here.) â¢ Each press of the Track Down key jumps to the previous track number to the track being played. â¢ When the number of total tracks of disc is nine or less, unit playback from a track 1. â¢ When the media to CD-DA, unit playback from track No. 28 by key operation of preset 1 key.