SONY MB806A
Instrukcja Serwisowa

(7) Check first that indication �L� of �AC1L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). n If the �L� indication does not disappear from the LCD (on A area: refer to the previous procedure (5) (when the RF input level is lower than the reference level) or �H� is displayed (when the RF input level is higher than the reference level), perform the following adjustment. 1 Check the RF output level and frequency of the signal generator (perform re-setting if necessary), and repeat from procedure (1). 2 If the above conditions (the �L� indication does not disappear, or �H� is displayed) remain even after re-adjustment, it is necessary to check the WRU-806A Tuner Unit. (8) Indication on the LCD (Tuner [1]) appears as follows: LCD:

(13)Check first that indication �L� of �AC3L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (14)Connect the signal generator to the ANTENNA B IN connector with DC cut fixture. (15)Indication on LCD (Tuner [1]) appears as follows: LCD:

B C1 L
(B C1 L)

A C2 L
(A C2 L)

(16)Set the FREQUENCY(carrier frequency) of the signal generator as follows; FREQUENCY(carrier frequency): U64 model; 772.000 MHz U66 model; 784.000 MHz U68 model; 796.000 MHz (17)Check first that indication �L� of �BC1L� on the LCD has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (18)Indication on the LCD (Tuner [1]) appears as follows: LCD:

(9) Set the FREQUENCY (carrier frequency) of the signal generator as follow. FREQUENCY(carrier frequency): U64 model; 776.000 MHz U66 model; 788.000 MHz U68 model; 800.000 MHz (10)Check first that indication �L� of �AC2L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (11)Indication on the LCD (Tuner [1]) appears as follows: LCD:

B C2 L
(B C2 L)

A C3 L
(A C3 L)

(19)Set the FREQUENCY(carrier frequency) of the signal generator as follows; FREQUENCY(carrier frequency): U64 model; 776.000 MHz U66 model; 788.000 MHz U68 model; 800.000 MHz (20)Check first that indication �L� of �BC2L� on the LCD (Tuner [1]) has disappeared, and then press the S708 switch on the RF-92 board (WRU-806A, Tuner [1]). (21)Indication on the LCD (Tuner [1]) appears as follows: LCD:

(12)Set the FREQUENCY (carrier frequency) of the signal generator as follow. FREQUENCY(carrier frequency): U64 model; 780.000 MHz U66 model; 792.000 MHz U68 model; 804.000 MHz

B C3 L
(B C3 L)

3-4

MB-806A (U) WRU-806A (U)