Sony WRT-822B, Service Manual

Page: 33 / 46

5-3
WRT-822B
IC
[|IC|]
VCC GND
MEMORY
ARRAY
DATA
REGISTER
MODE
DECODE
LOGIC
CLOCK
GENERATOR
DI
SK
3
1
2
ADDRESS
DECODER
OUTPUT
BUFFER
4
DO
INPUT
CS
DI
SK
OUTPUT
DO
CS
IN
SK
IN
DI
IN
DO
OUT
1
2
3
CS
DI
4
DO
1
2
3
4
8
7
6
5
V
DD
NC
NC
GND
; CHIP SELECT
; DATA INPUT
; SERIAL CLOCK
; DATA OUTPUT
CS
C-MOS 16,384-BIT SERIAL EEPROM
—TOP VIEW—
AK93C85AM-E2 (ASAHI)
20
19
18
17
ØP
TEST
ØR
16
15
14
13
Do2
FC
LAT
DATA
PS
CK
1
2
3
4
5
6
7
8
9
10
12
11
OSCI
OSCO
Vp
Do1
LD
FIN
PHASE
COMPARATOR
PROGRAMMABLE
COUNTER
PULSE SWALLOW
PROGRAMMABLE
COUNTER
CHARGE
PUMP 1
CHARGE
PUMP 2
SHIFT RESISTOR
LATCH
ØR
ØP
TEST
Do2
LAT
FC
PS
DATA
CK
OSCI
OSCO
Vp
Do1
LD
FIN
1
3
4
6
10
8
15
12
13
11
17
16
20
18
14
: REFERENCE FREQUENCY INPUT
: REFERENCE FREQUENCY OUTPUT
: POWER SUPPLY FOR CHARGE PUMP,
PHASE COMPARATOR
: CHARGE PUMP 1 OUTPUT
: CHARGE PUMP 2 OUTPUT
: LOCK DETECTION SIGNAL OUTPUT
: PHASE COMPARATOR OUTPUT
: PHASE COMPARATOR OUTPUT
: CLOCK INPUT
: DATA INPUT
: LATCH INPUT
: POWER SAVE INPUT
(“L” : POWER SAVE MODE)
: SELECTION TERMINAL FOR PHASE OF
PHASE COMPARATOR OUTPUT AND
COUNTER OUTPUT SIGNAL TO TEST
TERMINAL
: OUTPUT FOR DIVIDING SIGNAL OF
COUNTER
OSCI
OSCO
Vp
Do1
Do2
LD
ØP
ØR
CK
DATA
LAT
PS
FC
TEST
NC NC
NC
GND
V
CC
PLL FREQUENCY SYNTHESIZER (1.1 GHz BAND)
—TOP VIEW—
CXA1786N-T4 (SONY)
1
2
3
4
8
7
6
5 V
EE
V
CC
_ +
+ _
DUAL OPERATIONAL AMPLIFIERS
—TOP VIEW—
MC33077DR2 (MOTOROLA)
V _
V +
_
1
2
3
5
4
+
INPUT
_
INPUT
OUTPUT
+
SINGLE OPERATIONAL AMPLIFIER
—TOP VIEW—
NJM2107F-TE2 (JRC)
NJM2406F-TE2 (JRC)
GND
V +
+
1
2
3
5
4
_ INPUT
+ INPUT
OUTPUT
_
SINGLE COMPARATOR
—TOP VIEW—
RH5RH503B-T1 (RICOH)
GND LX
5 4
1 2 3
4
3
1
2
LX
EXT
CE
OUT
GND
5
LX
EXT
CE
OUT
; SWITCHING TERMINAL (OPEN DRAIN)
; EXTERNAL TRANSISTOR DRIVE (CMOS OUTPUT)
; CHIP ENABLE
; STEP-UP OUTPUT VOLTAGE MONITOR
V
LX
LIMITER SLOW START V REF.
BUFFER
PWM CONTROLE
OSC
CHIP ENABLE
PHASE
COMPARATOR
—
+
2
OUT
ERROR AMP.
LX
4
GND
5
EXT
3
CE
1
—TOP VIEW—
C-MOS PWM STEP-UP DC/DC CONVERTER
OUT CE EXT
LxSW
S-80820ANNP-EDH-T2 (SEIKO)
1 2
GND
3
NC
4
GND
OUT V
DD
2
4
1
2
V
DD
V
REF
+
_
4
GND
1
OUT
OUT V
DD
VOLTAGE DETECTOR
—TOP VIEW—
S-81233SGUP-DQF-T1 (SEIKO)
1
GND
OUT IN
2
1
3
2 3
GND IN OUT
POSITIVE VOLTAGE REGULATOR
—TOP VIEW—