Haier 29FV6H Service Manual page 16

Pin 13 and 14 are the I2C bus ports.
Pin 16 and 17 are the audio output ports to the audio processor.
Pin 18 is the video output port to the MCU.
Pin 22, 23, 24 are the video and audio output ports to the AV out.
6. Audio processing
The audio signal is select by the N802(TC90L01). The L audio signal
comes from pin 17 and through R815, R802, R646, C642, the signal goes
into pin 1 of N602(NJW1136L). The R audio signal come from pin 16 of the
N802 and through R816, R801, R647, C643, the signal goes into pin 32 of
N602. The audio signal is processed by N602. The processed audio signal
comes out of N602 at pin 8 and 26. At the XP608, audio signal can be
obtained at pin 3 and 4. There is one shield line, which transfers the audio
signal to the small audio amplifier printed circuit which is placed at the right
side of the main printed circuit uprightly. The L audio signal is received by
N601(LA4282) at pin 5.The R audio signal is received by N601(LA4282) at
pin 2. After being amplified, the L audio signal comes out of the N601 from
pin 7 and the R audio signal from pin 11. At XS602, the audio signal is
transferred to the loudhailers by one wire.
7.
Horizontal sync and horizontal scan output circuits
Horizontal sync signals are separated in N201 and output from pin 13 of N201.
R211, C207, C208 connected to N201 (14) realize H-PFC function.
pumping signals are transmitted from (13) of N201 to horizontal promotion transistor
V402 (2482), and then drive the H-DRIVE transformer T402. After being amplified it
switches power transistor V404 (2SD2539) to control the horizontal scan of the
electronic-beam. C430 is a horizontal S correction capacitor and L441(TLN2084) is
for horizontal linear inductor. T401 is a horizontal output transformer. The horizontal
return pulse output from pin 7 of T401 is transmitted to pin (27) of N201 who controls
ABCL circuits. ABCL avoid high-voltage over rated value that will cause X-ray and
affect your health.
8. Vertical sync and vertical scan output circuits
The vertical sync signals are separated from compound sync signals by sync
separating system. They are transmitted to the vertical tooth wave generator. The
external capacitor C209 (0.47uF) of pin (15) of N201 forms the vertical saw wave.
The vertical saw wave is transmitted from (16) of N201 (HAIER8829A-V1.0) to (5)
of vertical scan output IC N301 (LA7841). The external resistor R301 of N201 (16)
provides a reference current to the vertical tooth wave generator. After shaped and
amplified the vertical saw wave is output from pin (2) of N301.
Information introducing functions and testing data for LA7841 maintenance is listed
16
Horizontal