Electrical Adjustments; Focus Bias Check; Diagrams; Ic Pin Description - Sony D-E200 Service Manual

SECTION 4

ELECTRICAL ADJUSTMENTS

CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.

4-1. FOCUS BIAS CHECK

1. Connect the oscilloscope between TP629 (RF) or TP652 (RF)
and GND on main board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the N > 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.
• RF signal reference waveform (eye pattern)
VOLT/DIV : 100 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
RF level :
0.46 - 0.66 Vp-p
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
Test Points:
– MAIN BOARD – (SIDE A) – MAIN BOARD – (SIDE B)
TP652
– 7 –

5-1. IC PIN DESCRIPTION

• IC801 TMP88CM22F (SYSTEM CONTROLLER)
Pin No. Pin Name
1 VSS
2 RESERVE
3 FOK I
4 AGCPWM O
5, 6 RESERVE
7 AMUTE O
8 RESERVE
9 XRST O
10 SCK O
11 MSDT I (SENS)
12 MSDT O
13 WAKEUP O
14 AD SEL
15 AD CHGMNT
16 RESERVE
17 AD BATMNT
18 AD KEY1
19 RESERVE
20 AD DCINMNT
21 WP OPEN
22 VREFL
23 VREFH
24 VDD
25 SCOR I
26 GRSCOR I
27 FG I
S804
28 BEEP O
29 – 32 RESERVE
33 COMPRESSION
34 27/37
35 WFCKI
36 XWRE
37 XQOK
S805
38 DBB I
39 HOLD I
VOL
40, 41 RESERVE
42 XHGON
43 XLAT O
TP629
44 XSOE O
45 VOLUME IC LATCH O
46 XPOWLT O
47 RESERVE
48 XAPC OFF O
49 SEG15
50 – 62 SEG14 – 2
SECTION 5

DIAGRAMS

I/O Pin Description
I Ground
— Not used (Open)
I Focus OK signal input from digital servo processor (IC601).
O AGC control pulse output
— Not used (Open)
O Analog audio muting ON/OFF signal control signal output (H: Mute ON)
— Not used (Open)
O Reset signal output to CXD3027R (IC601). (L: Reset)
O Serial data transfer clock signal output to CXD3027R (IC601).
I Serial data input from CXD3027R (IC601).
O Serial data output to CXD3027R (IC601).
O WAKE-UP control signal output (for system standby reset)
I Plug-in detection signal input of LINE OUT/OPTICAL OUT jack.
I Battery charge voltage detection input from power control IC (IC401).
— Fixed at H.
I Battery voltage detection input
I Key input from switch unit (A/D input)
— Fixed at H.
I DC input voltage detection input (A/D input) DC input jack use/no-use detect input
I CD door open/close detection input
I Reference voltage (0 V) input for A/D converter.
I Reference voltage (+2 V) input for A/D converter.
— Power supply pin (+2 V)
I Sub code sync detection input from CXD3027R (IC601).
I GRSCOR signal input
I FG pulse input
O Beep sound output to headphone AMP (IC302).
— Not used (Open)
I Key input from EPS switch (S804).
— Not used (Open)
I WFCK input
— Not used (Open)
— Not used (Open)
I MEGA BASS switch (S802) input (L: OFF, H: ON)
I HOLD switch (S803) input (L: HOLD on, H: HOLD off)
— Not used (Open)
— Not used (Open)
O Serial data latch pulse output to D-RAM controller (IC601). (for ESP)
O Output enable signal output (for ESP)
O Not used (Fixed at H)
O Latch output to VCD control IC (IC401).
— Not used (Open)
O APC mute signal output (L: mute)
— Not used. (Open)
O LCD drive segment output
– 8 –
Pin No. Pin Name I/O Pin Description
63 SEG1 — LCD drive segment output (Open)
64 SEG0 O LCD drive segment output
65 – 68 COM3 – 0 O LCD drive common output
69 – 71 V3 – 1 O LCD drive bias output
72, 73 C1, 0 O Capacitor connected terminal of LCD driver for voltage-up.
74 STOP O Stop signal output to VCD control IC. (Connect to ground.)
75 TEST I Test terminal for IC. Fixed at L.
76 XHPSW O — Not used (Open)
77 XLIGHT O — Not used (Open)
78 RESET I I System reset signal input from power control IC (IC401). (L: Reset)
79 XIN I Oscillation input
80 XOUT O Oscillation output (Open)
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