JVC DR-MH20SE Service Manual page 22

MAIN 0 3
Audio signal control section (SHEET 8)
DEC_OUT[L/R]
LINE_OUT[L/R]
5
IC8301
IC8302
TO SHEET 11
AUDIO_IN1[L/R]
AUDIO_IN2[L/R]
24bit
A/D
F_AUDIO[L/R]
combatr
IC8001
AV1_L
AV2_H
4
ACD_RST[L]
I2C_CLK2 I2C_DATA2
F_AUDIO[L/R]
Video controller
TO CN7102
IC4001
SHEET 14
FRONT_VIDEO
FRONT_Y_IN
3
FRONT_C_IN
IC4201
HD_FROM_PDC
TU_VIDEO
Audio / video signal input control section (SHEET 9)
2
RCOUT COUT 480I[H] RYOUT YVOUT CBOUT CROUT
AO_FSYNC AO_D[0] DAC_RST[L] AO_SCLK A_DAC_CS AO_MCLKO
TO CN1001 DAC_SCL DAC_SDA
SHEET 5
YTODIGI CTODIGI
AI_D[0] A_MUTE2[H] AO_IEC958
TO CN1002
K_BUS_REQ K_BUS_OUT K_BUS_CLK K_BUS_IN SYS_RESET[L]
SHEET 5
P_MUTE[H] P_CTL[H] SYNC_DET VD
TO CN5301
FAN_CTL P.CTL[H] P.SAVE
SHEET 1
1
J4109
R.PAUSE
AV COMPULINK
SAT_CTL
SAT CONTROL
Input/output relay section(SHEET 10)
A
AUDIO_OUT1[L/R]
Muting
A_MUTE2[H]
Q8201,Q8202
IC8202
DAC_SDA
AOUTL
DAC_SCL
AOUTR
A_DAC_CS
DAC_RST[L]
2chDA converter
AO_D[0]
IC8201
AO_SCLK AO_FSYNC AO_MCLKO
AI_D[0]
TU_AUDIO[L/R]
AO_IEC958
IC8501
TO SHEET 13
REAR1_C_IN REAR 1_YV_IN
REAR2_C_IN REAR 2_YV_IN
YTODIGI CTODIGI
I2C_DATA_A/V I2C_CLK_A/V
SYNC_DET
I2C_CLK2 I2C_DATA2
SECAM_DET[H] SEPA_IN[H]
IC4301
SYNC+BGP.IN
SECAM
IC4304
B C
TO SHEET 11
J8401
Optical digital
OUT
J8501
COAXIAL OUT
D E
2-7 2-8
L-1 SCART Terminal
J7301
RAPID_SW BIAS/RGB_CTL
Q7310 to
Q7312
4_3[H] P50_I/O AV_YC_IN[H] TV[H]
AV1_L
SWITCH
IC7302
SCR_ID
AV2_H RGB_TH[H]
SWITCH
IC7303 to IC7306
VMUTE[L]
R
G
B
CROUT CBOUT
COUT YVOUT
480I[L] RCOUT RYOUT
REAR1_C_IN
REAR1_YV_IN
REAR2_C_IN
DEC_OUT[L/R] AUDIO_IN2[L/R]
REAR2_Y_IN
Input/output terminal section
(SHEET 11)
J7302
L-2 SCART Terminal
SCR_ID 4_3[H] RGB_TH[H] AV1_YC_IN[H] BIAS/RGB_CTL AV1_L AV2_H
RAPID_SW V_MUTE[L] TV[H] P50_I/O
P.MUTE[H] K_BUS_OUT SYS_RESET[L] K_BUS_IN P_CTL[H] K_BUS_CLK FAN_CTL
K_BUS_REQ SYNC_DET VD R.PAUSE SAT_CTL P.SAVE
ADC_RST[L] A_MUTE[H] AV1_L AV2_H I2C_CLK2 I2C_DATA2
SYNC_DET I2C_DATA_A/V I2C_CLK_A/V
SECAM_DET[H] I2C_DATA2 I2C_CLK2 SEPA_IN[H]
I2C_DATA2 I2C_CLK2 TU_DATA TU_CLK
TU_V_MUTE[H] SW1 SW2 AFC RF_AGC
System controller section(SHEET 12)
TU_V_MUTE[H]
Muting
Q6031
VIDEO_OUT
Tuner
TU6001
TV Multiplex TU_AUDIO[L/R]
sound processor
TU_DATA AFC RF_AGC
IC6701
TU_CLK SW1 SW2
I2C_DATA2 I2C_CLK2
Tuner section(SHEET 13)
F
J7308 J7307
S-VIDEO AUDIO OUT
LINE_OUT[L/R]
AUDIO_IN1[L/R]
R
G
TO
B
SHEET 8
V_OUT
Video driver
J7309
IC7301
COMPONENT
VIDEO OUT
System controller
IC3001
STB RC_IN S_CLK
HDD_REC_LED
LED_OUT HDD_LED
S_DATA_TOSYS DVD_REC_LED
S_DATA_FRSYS DVD_LED
VIDEO_LED
CN3001 CN3002
TO CN7001 TO CN7101
SHEET 14 SHEET 14
TU_VIDEO
G