Haier NS-F20C, Service Manual

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Bit 6 FREQ 1= Enable 0 EA
Bit 5 AV SELECT AUDIO 1=Enable 0 EA
Bit 4 PAL 1=Enable 0 EA
Bit 3 RESERVE 1= Enable 1 EA
Bit 2 SPANISH 1= Enable 1 EA
Bit 1 FRENCH 1=Enable 1 EA
Bit 0 ENGLISH 1=Enable 1 EA
6. OP6
Bit Function Description Preset Remark
Bit 7 RESERVE 1=Enable 0 EA
Bit 6 RESERVE 1=Enable 0 EA
Bit 5 SOFT CHANGE AV 1=Enable 0 EA
Bit 4 LISTEN 1=Enable 0 EA
Bit 3 INNER DVD 1=Enable 0 EA
Bit 2 ZOOM 1=Enable 0 EA
Bit 1 9860 1=Enable 0 EA
Bit 0 MENU STYLE 1=Enable 1 EA
Note
：
Don’t adjust any OPTION items, please inform the engineer about any change.
5. ICs functional description
1. N501
UOC TDA8377
SYMBOL PIN DESCRIPTION
STAND BY output. 1 In STAND BY mode, low level (Power OFF).
For Power ON this pin will be high.
SCL 2 I
2
C-bus clock line
SDA 3 I
2
C-bus data line
TUNING 4 tuning Voltage (Vt) PWM output
KEY 5 Control keys input
SYSTEM 6 TV system control
VOL 7 Sound Volume control PWM output
MUTE 8 Sound mute output
VSSC/P 9 Digit ground for μ -controller core and periphery
CTL 10 DVD power control
STANDBY 11 STANDBY control
VSSA 12 Analog ground of digital ground of TV-processor
SECPLL 13 Internally connected
VP2 14 2
nd
supply voltage TV-pro8V)
DECDIG 15 decoupling digital supply of TV-processor
PH2LF 16 Phase-2 filter
PH1LF 17 Phase-1 filter
GND3 18 Ground 3 for TV-processor
DECBG 19 Band gap decoupling
AVL/EWD 20 Automatic volume levelling
VDRB 21 Vertical drive B output
VDRA 22 Vertical drive A output
IFIN1 23 IF input 1
IFIN2 24 IF input 2
IREF 25 Reference current input
VSC 26 Vertical sawtooth capacitor
TUNER AGC 27 Tuner AGC output
AUDEEM/SIFIN1 *1 28 Audio deemphasize or SIF input
DECSDEM/SIFIN2 29 Decoupling sound demodulator
GND2 30 Ground 2 for TV processor