Sony D-F21 / D-F22ST / ICD-BP220 Service Manual ▷ View online
8
D-F21/F22ST
TP629
RF
– MAIN BOARD (SIDE B) –
Adjustment Location:
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between TP629 (RF) and GND on
main board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N X button.
4. Confirm that the oscilloscope waveform is as shown in the
3. Press the N X button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
Test Point:
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
CN501
IC61
TP81
VT
TP3
RF-IN
– MAIN BOARD (SIDE A) –
CT3 L4
L3
L1
CT1
L2
L2
FM TRACKING ADJ
AM IF ADJ
T1
AM TRACKING
ADJ
RF level :
0.45
0.45
±
0.1 Vp-p
VOLT/DIV : 20 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
9
D-F21/F22ST
SECTION 5
DIAGRAMS
5-1. IC PIN DESCRIPTIONS
• IC61 TC9327AF-631 (TUNER PLL, LCD DRIVER)
Pin No.
Pin Name
I/O
Pin Description
1 – 4
COM1 – 4
O
LCD driver signal output
5 – 20
S1 – 16
O
LCD driver signal output
21
AM STEP-I
I
AM 9K/10K tuning step select signal input (initialization)
22
DEST2-I
I
Bit2 tuner destination setting signal input (Fixed at “L” in this set)
23
DEST1-I
I
Bit1 tuner destination setting signal input (Fixed at “L” in this set)
24
DEST0-I
I
Bit0 tuner destination setting signal input (Fixed at “L” in this set)
25
XLOCAL/XMONO-DET-I
I
LOCAL/DX or MONO/STEREO ON-OFF switch detect signal input
26, 27
NC
—
Not used. (Open)
28
LCDREQ-I
I
LCD display request signal input
29
LID OPEN
I
CD door open detect signal input
30
EEP D0/D1-IO
I/O
Data signal input/output for EEPROM IC.
31
EEP SK-O
O
Clock signal output for EEPROM IC.
32
EEP CS-O
O
Chip select signal output for EEPROM IC.
33
XL/O-I
I
Line out signal input
34, 35
NC
—
Not used. (Open)
36
MEM-KEY (3-BIT)
I
Memory key signal input (Fixed at “H” in this set)
37
PRESET KEY
I
Not used in this set. (Open)
38
CD ACK-I
O
CD acknowledge signal output
39
CDON-IWP-CDU
I
CD ON request signal input (Wake-up tuner in sleep mode)
40
I/O (RESERVED)
—
Not used. (Open)
41
NC
—
Not used. (Open)
42
AD1 KEY
I
Set keys signal input
43
AD2 RMKEY
I
Remote key signal input (Fixed at “L” in this set)
44
AD3 BATT HIDC
I
Battery/HiDC level detect signal input
45
AD DC REF
I
Reference DC signal input of A/D.
46
SDI-I-CDU
I
Serial data signal input from system control IC.
47
SDO-O-CDU (RESERVED)
O
Serial data signal output to system control IC.
48
SCK-I-CDU
I
Serial clock signal input from system control IC.
49
TUBEEP-O
O
Beep sound control signal output
50
NC (I/O)
—
Not used. (Open)
51
XHOLD-I-SW
I
HOLD detect signal input
52
XAVLS-I-SW
I
AVLS detect signal input
53
XDC IN DET-I
I
DC-in detect signal input
54
TU ON-O
O
Tuner ON request signal output
55
ST OR DX-O-CTR
O
LOCAL/DX or MONO/STEREO ON-OFF control signal output
56
TUBASS2-O
O
MEGA BASS 2 sound mode signal output (Not used in this set)
57
TU TEST MODE
I
Tuner test mode detect signal input
58
TUBASS1-O
O
MEGA BASS 1 sound mode signal output (Not used in this set)
59
AM/XFM-O
O
Band control FM/AM signal output to tuner IC.
60
+B ON/OFF
O
Radio power ON/OFF signal output
61
IFREQ-O
O
IF request signal output
62
TUMUTE-O
O
Mute HP control signal output
63
TEST
—
Not used. (Open)
64
IFIN
I
FM/AM IF signal input
65
EO (DO1)
O
PLL error signal output
66
NC (DO2)
—
Not used. (Open)
67
HOLD
I
Not used. (Connect to ground in this set)
68
NC
—
Not used. (Open)
69
GND
—
Ground
70
FM IN
I
FM oscillation signal input
10
D-F21/F22ST
Pin No.
Pin Name
I/O
Pin Description
71
AM IN
I
AM oscillation signal input
72
VDD (1.8-2.2V)
—
Power supply pin
73
RESET
I
Power reset signal input
74
XOUT
O
Crystal oscillation signal output (75 kHz)
75
XIN
I
Crystal oscillation signal input (75 kHz)
76
VXT
—
Crystal oscillation signal pin
77
VLCD
—
LCD voltage doubler
78, 79
C1, 2
—
LCD voltage doubler
80
VEE
—
Constant voltage output to LCD.
11
D-F21/F22ST
• IC801 TMP88CM22AF-3H31 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
VSS
—
Ground
2
PWRSW
O
Headphone AMP IC power switch signal output
3
FOK I
I
Focus OK signal input from DSP IC. (“L”: NG, “H”: OK)
4
AGCPWM O
O
AGC control pulse signal output (Not used in this set)
5
CDON O
O
CD ON request signal output
6
SWEN2 O
O
CD/tuner select signal output
7
AMUTE O
O
Analog audio mute ON/OFF control signal output
8
VCC2ON O
—
Power supply pin (Not used in this set)
9
XRST O
O
Reset signal output to DSP IC.
10
SCK O
O
Serial data transfer clock signal output to DSP IC.
11
(SENS) SDTI I
I
Serial data signal input from DSP IC.
12
SDTO O
O
Serial data signal output to DSP IC.
13
SLPOUT O
O
WAKE-UP control signal output
14
AD CDTEST
I
CD test signal input (“L”: CD test) (Fixed at “H” in this set)
15
AD CHGMNT
I
Not used in this set. (Open)
16
AD RMKEY
I
Not used in this set. (Fixed at “L”)
17
AD BATMNT
I
Battery voltage detect signal input
18
AD CDKEY
I
Key signal input
19
AD RM INT
I
Not used in this set. (Open)
20
AD DCINMNT
I
DC-in voltage detect signal input (A/D input) and DC-in jack use/no use detect signal input.
21
WP OPEN
I
CD door open switch signal input
22
VREFL
I
Reference voltage signal input (0 V) for A/D converter.
23
VREFH
I
Reference voltage signal input (+2 V) for A/D converter.
24
VDD
—
Power supply pin (+2 V)
25
SCOR I
I
Sub-code sync (S0+S1) detect signal input from DSP IC.
26
GRSCOR I
I
GRSCOR signal input from DSP IC.
27
WFCK I
I
WFCK signal input from DSP IC.
28
BEEP O
O
Beep sound signal output to headphone AMP IC.
29
XCDRESET TU O
O
Reset signal output to DSP IC.
30
TUSCK O
O
Communication clock signal output to DSP IC.
31
(CD) SDI I
I
Communication data bus signal input from DSP IC.
32
(CD) SDO O
O
Communication data bus signal output to DSP IC.
33
RESERVE
—
Not used. (Open)
34
ACK CD I
I
CD acknowledge signal input
35
TUON I
I
Tuner ON request signal input
36
ESP
I
ESP switch signal input
37
L/O I
I
Line out signal input
38
AVLS I
I
AVLS switch signal input
39
HOLD I
I
HOLD switch signal input
40
CD-RW
I
Not used in this set. (Open)
41
—
—
Not used. (Open)
42
XHGON O
O
Not used in this set. (Open)
43
XTL O
O
Serial data latch pulse signal output
44
XSOE O
O
Serial data output enable signal output
45
TUVCPU O
O
Not used in this set. (Open)
46
POWLT O
O
Latch signal output to power control IC.
47
TUAUDIO O
O
Not used in this set. (Open)
48
XAPC OFF O
O
APC mute signal output (“L”: mute)
49
CDAUDIO O
O
Not used in this set. (Open)
50
RESERVE
—
Not used. (Open)
Click on the first or last page to see other D-F21 / D-F22ST / ICD-BP220 service manuals if exist.