Schematy są ale można wysilić się i zrobić kolorowy skan i o większej rozdzielczości. Wtedy schematy płytek będą czytelniejsze. Całość super jako wartość merytoryczna. Wszystkie dane potrzebne do podłączenia różnego rodzajów urządzeń takich gramofon, CD itd.
jedyne do czego mogę mieć zastrzeżenie to jakość zdjęć zawartych w przesłanej instrukcji serwisowej ponieważ są fatalnej jakości, praktycznie nieczytelne. tak poza tym jestem zadowolony to jest to czego szukałem.
Tekstowy podgląd strony 9 (kliknij aby zobaczyć)
SECTION 3 TEST MODE
3-1. OUTLINE
This set has the test mode in which the pick-up can be operational checked and the video signal can be verified.
3-3. VIDEO SIGNAL VERIFICATION
3-3-1. Setting the test mode 1. Switch positions OPEN switch (S801) : OPEN HOLD switch (S804) : OFF AVLS switch (S893) : OFF 2. Short the TEST terminal TAP801(TEST) by soldering it. Remove the solder from the TAP901(V-TEST) and connect the terminal to the TP945 (VDD) with a 47 k� resistor. 3. Supply 4.5V DC from the DC jack (J401). 3-3-2. Releasing the test mode 1. Open the TEST terminal TAP801(TEST). Remove the resistor from the TAP901 (V-TEST) and short the terminal by soldering it. 2. Turn the power OFF. 3-3-3. Operational checks 1. Connect the TP931 to the TP945 (VDD) with a 47 k� resistor (NTSC mode). 2. Press the O RETURN key once. 3. Verify that a 100% white pattern is output from the VIDEO OUT (J901). 4. Press the O RETURN key once (output off). 5. Connect the TP931 to the TP919 (GND) (PAL mode). 6. Press O RETURN key once. 7. Verify that a 100% white pattern is output from the VIDEO OUT (J901). 8. Press the O RETURN key once (output off). 9. Open the TP931.
3-2. PICK-UP OPERATIONAL CHECKS
3-2-1. Setting the test mode 1. Switch positions OPEN switch (S801) : OPEN HOLD switch (S804) : OFF AVLS switch (S893) : OFF 2. Short the TEST terminal TAP801 (TEST) by soldering it. Remove the solder from the TAP901 (V-TEST) and open the terminal. 3. Supply 4.5 V DC from the DC jack (J401). 3-2-2. Releasing the test mode 1. Open the TEST terminal TAP801 (TEST) and short the TAP901 (V-TEST). 2. Turn the power OFF. 3-2-3.Operational checks 1. When a specific key is operated: Contents of the operation. KEY ((LCD DISPLAY)) u x CHG > NEXT Spindle on. Tracking servo off. ((UP 00 03)) All servo off. Mute on. ((10 different displays are repeatedly presented.)) Moves the pick-up to the outside (with the open switch open). Tracking servo off. Mute on. ((Among 10 different displays, the display when the key is pressed is held.)) Moves the pick-up to the inside (with the open . PREV switch open). Tracking servo off. Mute on. ((Among 10 different displays, the display when the key is pressed is held.)) 2. In play mode � Press the u key: KEY Contents of the operation. ((LCD DISPLAY)) Tracking servo on. Mute off. Each time this key is pressed, the display changes as follows: x1 speed t x2 speed t x3 speed t x4 speed t x1 speed (( 01 00 01)) t ((02 00 02)) t ((03 00 03)) t ((04 00 04)) SELECT REPEAT/ ENTER Each time this key is pressed, the display changes as follows: Tracking gain up. Emphasis on. LCD back light on h Tracking gain down. Emphasis off. LCD back light off
1.0 ± 0.2Vp-p H
Fig. 100% white pattern
Adjustment Location: See page 10.
