Hisense Lcd32v86 Service Manual

 
 
 - 31 -
LCD TV Service Manual                         
Hisense Confidential 
7.6 Troubleshooting for YPbPr input 
No picture on the screen 
Check Source work or not 
Check connect 
Check Wires (Green Blue, Red) 
Replace main board 
Check Source Device 
Reconnect 
Replace wires 
NO 
YES   
YES  NO  YES 
NO 
 
 
 
 

 
 
 - 32 -
LCD TV Service Manual                         
Hisense Confidential 
7.7 Troubleshooting for Video/S-Video input 
No picture on the screen 
Check Source work or not 
Check connect 
Check Cable/ Wires 
Replace main board 
Check Signal Source 
Reconnect 
Replace Cable/Wires 
NO 
YES   
YES  NO  YES 
NO 
 
 
 
 
8. Schematic circuit diagram 
 
 
 

55
44
33
22
11
D
D
C
C
B
B
A
A
OFF_MUTE
+3V3
12V_MSCT2_AUR_OUTSCT2_AUL_OUT
GND
HPOUTL1 HPOUTL1
GPIO_11
A_MUTE
DAC_AUR_OUTDAC_AUL_OUT
A_MUTEGPIO_11
HPOUTL1HPOUTR1
AOMCLKAOLRCKAOBCKAOSDATA0
5V_M
AOMCLK
AOBCKAOLRCKAOSDATA0
HPOUTR
DAC_AUL_OUTDAC_AUR_OUT
HPDET#
DAC_AUL_OUTDAC_AUR_OUT
HPOUTLHPOUTR
SCT1_AUR_OUTSCT1_AUL_OUT
DAC_AUR_OUT
DAC_AUL_OUT
AL2AL1AR1AR2
DACVA
AOTLAOTR
AL2AR2AOTLAOTR
BOMCLKBOLRCKBOBCKBOSDATA0
AR1AL1
SCT1_AUL_OUT
A_MUTEA_MUTE
SCT1_AUR_OUT
A_MUTE
SCT2_AUL_OUT
A_MUTE
SCT2_AUR_OUT...

55
44
33
22
11
D
D
C
C
B
B
A
A
Title
SizeDocument NumberRev
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MediaTek (ShenZhen) Inc.
   
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MediaTek Confidential
Title
SizeDocument NumberRev
Date: Sheet
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MediaTek (ShenZhen) Inc.
   
Drawn:
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MediaTek Confidential
Title
SizeDocument NumberRev
Date: Sheet
of
MediaTek (ShenZhen) Inc.
   
Drawn:
1
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114
MediaTek Confidential
Low = HP insert High = WP disable
High = Mute on
ADIN0
ADIN1
ADIN2
ADIN3
ADIN4
ADIN5GPIO_20
GPIO_21
GPIO_22
GPIO_23
GPIO_24
GPIO_25
HMDI 0 HPLUG...

55
44
33
22
11
D
D
C
C
B
B
A
A
GND
+3V3AV12DDRV+5V_TUNERDV10+5V_ON12V_M5V_M
SW
UP31
BL-ON/OFFBL-ADJUSTSW
BL-ON/OFFBL-ADJUST
UP31
PW_CTL1
PW_CTL1
DDRV
+5V_ON
DV10
5V_M
+5V_TUNER
+3V3
AV12
12V_M
+5V_ON+3V3AV12DDRV+5V_TUNERDV1012V_M5V_M
12V_M
+5VS
5V_M
+5VS
12V_M+5VS5V_M
12V_M
VPA
+3V3
+5V_ON
VPA
12V_M
5V_M
+5V_ON
5V_M
+5VS
+5V_ON
GND 3,4,5,6,7,8,9,10,11,12,13,14+5V_ON+3V3 3,4,6,7,11,13,14AV12 4DDRV 3,4,5+5V_TUNER 11DV10 3,412V_M 11,145V_M 3,6,8,12,13,14UP31 3,6BL-ON/OFF 14BL-ADJUST 14PW_CTL1 6
Title...

55
44
33
22
11
D
D
C
C
B
B
A
A
OFF_MUTE
AUD_VMID
XTALI
XTALO
AL1AR1
USBVRT
DV10
CVBS7
UP35
U0TXU0RXU1TXU1RX
AV12_LVDSPLL
GPIO_7
GPIO_7
VGAHSYNC#VGAVSYNC#
AV33_HDMI
MPX2_PMPX2_N
ORESET#
GPIO_8
AV33_CVBS
CVBS0P
DV33
CVBS0N
RDQ1
AV33_ADCREF
U0TXU0RX
OIRI
PWM0UP35UP33UP34
DV10
OIRI
OSCL0OSDA0
ORESET#
AOMCLK
RX1_CBRX1_C
RX1_1BRX1_1RX1_2BRX1_2
RX1_0BRX1_0
RDQ3RDQ2
GND
AV12A_RGBBAV12D_RGB
AV33_SIF
RDQ6
CVBS0PCVBS0N
RDQ5
RBA1RBA0
RDQ4
GPIO_8
RDQ7
AV33_VGA
GPIO_4
DV10
AUD_LAUD_R
DV10
DV33
VGAHSYNC#VGAVSYNC#...

55
44
33
22
11
D
D
C
C
B
B
A
A
AV33_XTL
AV12DV10
AV12_PLLAV12_MEMPLLAV12_LVDSAV33_HDMIAV33_LVDSAV33_CVBSAV33_ADCAV12_USBAV12_HDMIAV33_SIF
DV33
AV33_VGAAV33_USB
+3V3
AV33_DACDDRVGNDAV12_LVDSPLL
AV12D_RGBAV33_SIFDIGAV33_ADCREFAV12A_RGBB
AV33_SIF
+3V3
AV33_XTL
AV12_PLL
AV12
AV33_LVDS
+3V3
DDRV
DV10
+3V3
AV12_USBAV12_HDMI
AV33_XTL
+3V3
AV33_USB
+3V3
AV33_HDMIAV33_CVBS
AV12_USB
AV12
AV33_LVDS
AV12_LVDS
AV12
DV33
+3V3
AV33_ADC
+3V3
AV33_ADC
AV12_HDMI
AV12
DV33AV33_SIF
AV33_CVBS
+3V3
+3V3AV33_VGA
AV33_HDMI...

55
44
33
22
11
D
D
C
C
B
B
A
A
MEM_ADDR6MEM_ADDR5MEM_ADDR4
MEM_DQ0
MEM_VREFMEM_DQ15
MEM_DQ1
MEM_DQ14
MEM_DQ2MEM_DQ3MEM_DQ4MEM_DQ5MEM_DQ6MEM_DQ7MEM_DQS0MEM_WE#MEM_DQM0MEM_CAS#MEM_CS#MEM_RAS#MEM_BA0MEM_BA1MEM_ADDR10MEM_ADDR0MEM_ADDR1MEM_ADDR2MEM_ADDR3
MEM_DQ13MEM_DQ12MEM_DQ11MEM_DQ10MEM_DQ9MEM_DQ8MEM_DQS1MEM_DQM1MEM_CLK0#MEM_CLK0MEM_CLKENMEM_ADDR12MEM_ADDR11MEM_ADDR9MEM_ADDR8MEM_ADDR7
RWE#RCAS#RRAS#RCS#RDQS0RDQM0RDQM1RDQS1RCKERCLK0RCLK0#RDQ[15..0]RA[12..0]RBA0RBA1MEM_VREFDDRVGND
MEM_CLKEN...

55
44
33
22
11
D
D
C
C
B
B
A
A
OSCL0OSDA0
ORESET#
FRESET#
PWM2
AOSDATA0
PWM2ORESET#OIRIU0TXU0RXU1TXU1RX
U1TXU1RXU0TXU0RX
USB_DM0USB_DP0USB_DM1USB_DP1GPIO_7GPIO_8GPIO_9GPIO_10+3V3
FCIDAT3
FCICLKFCICMDFCIDAT0FCIDAT1
GPIO_2GPIO_3GPIO_5GPIO_6GPIO_7GPIO_8GPIO_9GPIO_10
SD_WPFCIDET
FCIDAT2
+5V_ONICEAOSDATA0GPIO_2GPIO_3GPIO_5GPIO_6SPI_CS#SPI_SOSPI_SISPI_SCK
SPI_CS#SPI_SI
SPI_SOSPI_SCK
OSCL0OSDA0GND5V_M
USB_VDD0
USB_DM0OGPIO_8
USB_VDD0USB_DM0OUSB_DP0OGNDUSB_DM1OUSB_DP1O
GND
USB_DP0OUSB_DM0GPIO_10USB_DM1O
GPIO_9...

55
44
33
22
11
D
D
C
C
B
B
A
A
CECA
HDMICAB0
RX0_CBRX0_CRX0_1BRX0_1RX0_2BRX0_2RX0_0BRX0_0
UP33
OPWR0_5V
CECA
HDMICAB1
RX1_CBRX1_CRX1_1BRX1_1RX1_2BRX1_2RX1_0BRX1_0
UP30
OPWR1_5VCECA CECA
CEC
HDMIDDCSCL_2HDMIDDCSDA_2
CECA
HDMICAB2
RX2_CBRX2_CRX2_1BRX2_1RX2_2BRX2_2RX2_0BRX2_0
UP35
CECA
OPWR2_5V
HDMIDDCSCL_1HDMIDDCSDA_1
HDMI_PLUGPWR0
HDMI_PLUGPWR1HDMI_PLUGPWR2
HDMIDDCSCL_0HDMIDDCSDA_0...