Yamaha CRX-330 Service Manual page 58

A B C
CRX-330/NS-BP110/NS-BP100
MAIN 2/3
1
MAIN (1)
2
3
CD IN
4
CB211
5
6
CB212
to Loader mechanism unit
CB213
7
to Loader mechanism unit
8
IC214: AN41010A-VF IC218: MN103SFB5KYAA
5-ch. linear driver IC for CD and DVD player Microprocessor
[Sled] [Spindle] [Loading] [Tracking] [Focus] PVCC PGND
M M M INTERFACE
VO5+ VO5- VO3+ VO3-
VO1+ VO1- MEMORY
VO4+ VO4- VO2+ VO2-
19 18 17 16 13 12 11 10 9 8 15 14
8 KB
OPI+ USB
PVCC/2
22
OPI-
23
SIF
9
Direction Direction Direction Direction Direction x 2
Detection Detection Detection Detection Detection
I2C
OPO
24 x 1
VREF
20 I/O port
34 pcs (3 V type)
· Standby
8 pcs (5 V type)
STBY · Band-gap
1 · SVCC
Logic
Reset Circuit
CLOCK &
SYSTEM control
FIN
21 27 2 26 3 7 6 5 27 28 4
[STBY]
"L": All mute
20 kΩ 20 kΩ 18 kΩ 20 kΩ 20 kΩ
"H": All active
SGnd SVCC IN5 PC5 IN4 PC4 IN3R MC2 MC1 IN2 IN1 PC1-2
[PC1-2,PC4,PC5]
MC1 MC2 MODE
"L": mute
"L" "L" Forward
"H": active
"L" "Hi-Z" Brake
"L" "H" Reverse
"H" "L" Stand-by Note) For use inputting 3-state
"H" "H" Brake MC1 is fixed to L"
10
58
D E F
0
1.8
0.2
1.8
3.4
0
1.8
1.6
1.8
0.3
1.9
1.8
1.9
1.8
1.9
0.2
2.3
2.0
1.8
1.8
1.2
3.4
1.2
1.3
1.3
1.8
1.8
3.1
1.8
2.3
1.5
2.0 0.3
0.2
3.2 1.8
3.4 1.8
3.4 1.6
1.8
3.4
3.3
1.8
0 1.8
1.8
0
0 0
7.2
3.3
3.4 1.8
3.4 3.3
3.3 3.3
0.6
3.1
0.6 3.5
0
7.2
3.3 3.4
CD IN
IC219: M12L16161A-7TG
512 K x 16-bit x 2 banks synchronous DRAM
ROM
256 KByte 32 bit
FLASH MICRO-
DMA 4 CH
MEMORY PROCESSOR Bank Select Data Input Register
CORE
DATA
RAM
8 KByte 512K x 16
CLK 512K x 16
ADD
INTERRUPT
TIMER
CONTROL
Column Decoder
8-bit x 4
WDTx1
16-bit x 2 35 Factor
Latency & Burst Length
LCKE
Programming Register
LRAS LCBR LWE LDQM
LCAS
LWCBR
Timing Register
CLK CKE CS RAS CAS WE L(U)DQM
G H
1.8
1.6
1.6
1.6
1.6
1.8
1.8
1.8
2.1
1.9
1.8
CD CONTROLLER
0
0
IC217
3.4
3.4
3.4
3.4
0
1.8
1.7
1.7
0
3.4 3.4 3.5
C 0
0
0
(Writing port)
IC220: R5523N001A-TR-F
High side switch IC
V DD 1 50 V SS V IN 4
DQ0 2 49 DQ15
LWE
DQ1 3 48 DQ14
V 4 47 V
LDQM SSQ SSQ
DQ2 5 46 DQ13
GATE CURRENT
EN 1
DQ3 6 45 DQ12
CONTROL LIMIT
V DDQ 7 44 V DDQ
DQi DQ4 8 43 DQ11
FLAG
DQ5 9 42 DQ10
DELAY
V SSQ 10 41 V
SSQ
UVLO
DQ6 11 40 DQ9
DQ7 12 39 DQ8
V DDQ 13 38 V DDQ
THERMAL
LDQM 14 37 N.C/RFU
SHUTDOWN
WE 15 36 UDQM
2
CAS 16 35 CLK
RAS 17 34 CKE GND
CS 18 33 N.C
BA 19 32 A9
A10/AP 20 31 A8
A0 21 30 A7
A1 22 29 A6
A2 23 28 A5
A3 24 27 A4
V 25 26 V
DD SS
I J K
IC219
15.3
5.2
(Writing port)
5.2
0
USB CURRENT
LIMIT IC
0
0
0.3
3.5
USB CONTROLLER
0
3.4
3.5
3.5 1.3
1.8
0 D
3.5
1.8 3.5
0
0
0
0.3
3.4
IC221: BD9302FP-E2
2.5 MHz 2 A power switch 2 ch step-down switching regulator
5 V OUT
PGND1 1 25 SW1L
COMP1 2 24 SW1
OCP
0.6V
Current
ERR
+ Sense
FB1 3 23 SW1
-
RT 4 DRV2 22 BOOT1
SDWN
slope
Set
3 FLG
DRV1
N.C. 5
+ - Reset
PWN SDWN 21 PVCC
SS1/SD 6
VCC 7 20 PVCC
UXLO
VREF Internal TSD
5V
Bisa
OSC
SS2/SD 8 19 PVCC
N.C. 9
18 PVCC
SDWN
0.6V Set
DRV1
+ Reset
FB2 10
- 17 BOOT2
SDWN
DRV2
ERR
PWN
+ -
COMP2 11 16 SW2
slope
Current
Sense
OCP
GND 12 15 SW2
PGND2 13 14 SW2L
L M N
CB216
Page 60 N3
to POWER (1)_W1
15.3
7.2
7.2
IC221
0
3.5
1.9
3.3
0
0
0
IC220
5.2
0
5.2
POINT C XL203 (Pin 109 of IC217)
POINT D XL204 (Pin 11 of IC218)
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがございます。