Block Diagram - JVC LT-26DB1BU/AX Service Manual

BLOCK DIAGRAM

SERVICE PORT
PC
RS232
TXD/RXD
KEY PWB
&
IR PWB
POWER UNIT
TUNER0_I2C
U921
T+C TUNER IF+/-
CH_TER_RESET
RF_CVBS
SIF
TUNER_I/O_P_N
U1021
TUNER1_I2C
Analog Tuner
LNB_OUT
LNB_OUT
UART1_TXD/RXD
4Pin Con.
U831
UART0_TXD/RXD
TA_A/RA_A LS
ILX232
Y961
XTAL
PC2 INT_OUT
PD0,PD1
IR_IN PD6
KEY_ADC1 PA1 PC0,PC1
M_I2C
KEY_ADC2 PA0 PB2 CEC_A
LED_B PA2 PA4
LED_R PA3 PA5
U82
MOD2_ID PA5 PC5 A_RESET
MOD1_ID PA6 MICOM CTRL PC4
PC3 LPM_RST_N
SCART_MUTE
PD7
SMPS_ON PB4
CLK IN/OUT
PWM_DIM
PB5,6,7,RESETn
A_DIM
BKLT_EN
AC_DETECT
P_PWM_DIM
JTAG JTAG
P_A_DIM KIA7042AF
Header Header
P_BKLT_EN
Development Only
*
+24V
+5V8STB
+5V
+12V
U321,U322 DDRA[0:12]
/DDRDQ[0:31]
DDR2(333MHz/512Mbit)
U181
HOST_A[1:2]/HOST_D[0:7]
FLASH MEMORY
Buffer&SW
JP221
PPKT_CLK
CI SLOT PPKT__D[0..7] Buffer
PPKT__SYNC
PPKT_I_VAL
MOD_CLK
MOD_D[0..7] Buffer
MOD_SYNC
MOD_VAL
FLI_I2C0
TS0_D[0..7]
U961
DEMOD
TS0_SYNC
Buffer&SW
TS0_VALID
TS0_SEL
TS0_CLK
MUX_TSI_CLK
MUX_TSI_SYNC
TS0_SYNC
MUX_TSI_VAL
TS0_VALID
MUX_TS_D0
TS0_CLK
MUX_TSI_CLK
Buffer&SW
MUX_TSI_SYNC
MUX_TSI_VAL
TS1_CLK
TS1_SYNC
TS0_SEL
TS1_VALID
TS1_SEL
TS1_CLK
TS1_SYNC
MUX_TSI_D[0..7]
TS1_VALID
U1081
Buffer&SW
DEMOD
TS1_D[0..7]
&
TS1_SEL
A8293
FLI_I2C0
22K_TONE CH_RESET
(No.YA698<Rev.001>)2-5
PWM3
PWM2
UART1 DFSYNC_IN_OUT_GPIO8
PPWR
LVTX_ODD
UART0 LVTX_EVN
RESET_N
CLK IN/OUT
USB2.0 HOST
WM0P
I2C1 USB_PWREN
LS FLI_I2C1
USB_FLAG
DVI_ARX
U113
EEPROM HDMIA_I2C
HDMIA_HPD
Y81
XTAL
FLI_I2C0 I2C0
AHS, AVS
EJTAG VGA_R,VGA_G,VGA_B
S0_SCL/SDA
AUD_IN_L3/R3
VXO_D11
U112
SCART_FB
SCALER
LBADC_IN4
DDR MEM
A1P,B1P,C1P/SV1P
CTL. BUS
AUD_IN_L1/R1
AUD_OUT1R/L
AUD_OUT2R/L
VDAC_GY_YC_P
ROM MEM
CTL. BUS
VXO_D10
VOUT
POD_CTL.
LBADC_IN5
A2P,B2P,C2P/SV2P
TS_Parallel
STREAM_CLK
STREAM_D[0..7] Inputs
STREAM_SYNC
AUD_IN_L2/R2
[POD]
STREAM_VAL
A3P,B3P,C3P
AUD_IN_L4/R4
B4P,A4P
SV3P
AUD_IN_L5/R5
SV4P
TNR_SIF
GPIO134
AUDIO_MUTE
AUD_MCLK1
I2SA_BCLK
I2SA_WCLK
I2SA_DAT0
TS_SEL VXO_D0
CH_TER_RESET VXO_D1
VXO_D5
CH_RESET
AUDO_SPDIF_OUT
2-6(No.YA698<Rev.001>)
P_PWM_DIM
P_A_DIM
PWM_DIM P_BKLT_EN
A_DIM
+24V
BKLT_EN PANEL
PANEL_PWR
LVDS_OUT
RESETn_MAIN
USF-T
LPM_RST_N
USB_HOST
USB IN
+5V
U104
USB SWITCH +5V_USB
TMDS_A
HDMI_SCL/SDA
FLI_I2C1
U551
HPDA
HDMI SWITCH
HS/VS
VGA_HS/VS 74HC14
PC IN
PC_R/G/B
VGA_SDA/SCL
PC
AUDIO
EEPROM
PC_RI/LI
SCART_FB_SEL
U381
VIDEO SCART2_FB
SCART_FB
SWITCH
SCART1_FB
SCART_ID1
SCART1_R/G/B/CVBS
SCART1_RI/LI
SCART1_RO/LO SC1_R/L_OUT_O
U662,U663
SCART1
SCART2_RO/LO OP AMP
SCART1_CVBSO
U383
VDAC_OUT
VIDEO
RF_CVBS
SWITCH
SC1_SEL
SC1_SEL
SC2_R/L_OUT_O
U382
FILTER
SCART2_CVBS_OUT
SCART2_CVBSO
SCART_ID2
SCART2_R/G/B/CVBS
SCART2
SCART2_FB
SCART2_RI/LI
YPbPr
Component_R/L
SVHS_Y/C
AV_CVBS
AL/AR_CVBS
RF_CVBS
SIF
HEADPHONE_ID
HPO_L/R
AUDO_MUTE
OP AMP
HP_L/R
I2S_OUT AMP_R-
U761 SPEAKER(R)
AMP_R+
FLI_I2C1
Digital Audio
AMP
AMP_L-
SPEAKER(L)
A_RESET AMP_L+
SPDIF
DIGITAL AUDIO
TMDS 1
HPD1
HDMI EXT5
CEC
TMDS 2
HPD2 EXT6
HDMI
CEC
TMDS 3
HPD3 EXT7
HDMI
CEC
EXT1
EXT2
EXT3
EXT4
HEADPHONE