Block Diagram; Overall Wiring Diagram - Pioneer VSX-821-K Service Manual

1

4. BLOCK DIAGRAM

4.1 OVERALL WIRING DIAGRAM

A
When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS LIST".
The > mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
AC CORD
or INLET
B
C
1.FLAC 1
2.FLCT 2
1.FLAC
3
3.FLAC
2.FLCT
3.FLAC
4.GNDU
5.CPU_+3.3V
. .
1 2 8 9
6.CPU_ST_VCC
7.PDN
CP701
8.STBY_RLY
9.HDMI+12V
D
AMP ASSY (7ch) (
B
(VSX-921-K:7028070251040-IL)
AMP ASSY (5ch) (
C
(VSX-821-K/521:7028070241030-IL)
E
1.STBY_KEY 1
2.INPUT_UP 2
3.GNDU
3
4.INPUT_DN 4
O
5.ST_H+5V 5
6.POWER_LED 6
POWER ASSY
(7028070212050-IL)
F
F
HEADPHONE ASSY
(7028070215050-IL)
14
1
2
V
BT ASSY
(7028070231010-IL)
E
SUBWOOFR ASSY
(VSX-821-K/921:7028070272070-IL)
(VSX-521-K:7028070272050-IL)
(S1)
MAIN TRANS
(S3,4)
(S5)
(S2)
1/2, 2/2)
B B
C C
1/2, 2/2)
1.FL1
CP701
2.FLCT
3.FL2
1 2 . . 8 9
4.GNDU
5.CPU+3.3V
6.CPU_ST_VCC
7.PDN
8.STBY_RLY
9.HDMI+12V
1 1.STBY_KEY
2 2.INPUT_UP
3 3.GNDU
4 4.INPUT_DN
5 5.ST_H+5V
6 6.POWER_LED
1.HP_L
CN721 G
2.AGND
3.HP_R
1 2 3 4
4.H/P DETECT
MIC ASSY
(VSX-821-K/921:7028070213050-IL)
(VSX-521-K:7028070213020-IL)
2
3
1.BT_R
2.AGND
3.BT_L
4.CPU_GND
1
5.BT_ON/CE 2
.
6.BT_+5V .
7.BT_ID 14
8.BT_DET 15
CP5
9.BT_TX
CP601
(MAIN)
10.BT_RX
1.SW_MUTE
11.BT_/OC
11
2.AGND
10 3.SW_OUT
1 .
. 4.AGND
2
.
2 5.TUNER_R
.
6.AGND
1
10
7.TUNER_L
11 CP2
8.AGND
(SW) 9.BT_R
CP603
10.AGND
(BT)
11.BT_L
12.AGND
1.BT_R
13.SIRIUS_L
2.AGND
14.AGND
3.BT_L 15.SIRIUS_R
4.CPU_GND
5.BT_ON/CE
6.BT_+5V
7.BT_ID
8.BT_DET
9.BT_TX
10.BT_RX
11.BT_/OC
1
2
.
.
16
CP602
17
CP6
(SW)
(MAIN)
1.SIRIUS_RX
2.SIRIUS_TX
3.SIRIUS_P/E
4.U/DGND
5.BT_ON/CE
6.BT_+5V
7.BT_ID
8.BT_DET
9.BT_TX
10.BT_RX 10.BT_TX
11.BT_OC
11.BT_OC
12.TUNER_SCLK 12.SCLK
13.TUNER_SDIO
14.TUNER_SEN
15.TUNER_RST
15./RST
16.TUNER_INT
16.GPIO2/INT
17.TUNER_+5V 17.+5V(TUNER)
(S1)
1.AC
2.NC
CP1
3.GND
4.NC
(MAIN) 5.AC
D
MAIN ASSY
(VSX-821-K: 70280702710H0-IL)
(VSX-921-K: 70280702710G0-IL)
(VSX-521-K: 70280702710D0-IL)
N
FRONT ASSY
(VSX-821-K/921:7028070211050-IL)
(VSX-521-K:7028070211020-IL)
VSX-821-K
3
4
1.SW_MUTE
1
2.AGND
2 3.SW_OUT T
.
. 4.AGND
D-MAIN ASSY
14 5.TUNER_R
6.AGND
15
7.TUNER_L
8.AGND
9.BT_R
10.AGND (VSX-821-K:7028070191030-IL)
11.BT_L
12.AGND
13.SIRIUS_L
14.AGND
15.SIRIUS_R (VSX-921-K:7028070191050-IL)
(VSX-521-K:7028070191020-IL)
1
A
2
AUDIO ASSY
.
.
16
17
(VSX-821-K/521:702807018030
1.SIRIUS_RX
2.SIRIUS_TX
3.SIRIUS_P/E (VSX-921-K:702807018050-IL)
4.U/DGND
5.BT_ON/OFF
6.+5V(BT)
7.BT_ID
8.BT_DET
9.BT_RX
13.SDIO
14./SEN
Q BRIDGE A ASSY
(7028070222070-IL)
1.+HIGHB
2.+HIGHB
3.+HIGHB
4.-HIGHB
5.-HIGHB
6.-HIGHB
1.FL
7.HIGHGND
2.FR
1.SBL 8.HIGHGND
3.C
2.NC 9.HIGHGND
4.SL
3.SBR
10.PREGND
5.SR
1 2 3 1 2 . . 9 10
1 2 3 4 5
CN2 CN3 CN1
(MAIN) (MAIN)
(MAIN)
1.+HIGHB
2.+HIGHB
3.+HIGHB
4.-HIGHB
5.-HIGHB
CP405 CP403 6.-HIGHB CP402
7.HIGHGND
8.HIGHGND
1 2 . . 9 10 1 2 3 4 5
1 2 3
9.HIGHGND
10.PREGND
CN901
1 2 . . 9 10
M
1.+6.8V
2.GNDA
3.-6.8V
4.PORTABLE_R
5.GNDA
F-VIDEO ASSY
6.PORTABLE_L
7.GNDA
8.MICOUT
9.MIC_DET
10.MIC_SEL
(VSX-821-K/921:7028070214050-IL
4
( 1/4- 4/4)
T T
1.AIN_R
2.GNDA
3.AIN_L
4.GNDA
5.FR_OU
6.GNDA
7.FL_OU
8.GNDA
9.SR_OU
10.GNDA
11.SL_OU
12.GNDA
13.C_OUT
14.GNDA
15.SW_OU
16.GNDA
17.SBR_O
18.GNDA
19.SBL_O
CN209
(BRIDGE_A)
1.FL
2.FR
3.C
4.SL
5.SR
(921
1
2
CN601
3
4
5 4 3 2 1
5