Sony ZS-M35 Service Manual ▷ View online
– 33 –
5-3. CD SECTION
Set the CD test mode when performing confirmations.
After completing the confirmation, release the CD test mode.
After completing the confirmation, release the CD test mode.
In the CD test mode, the set works as following sequence.
CD test mode sequence:
Note 1:
ALL SERVO ON mode 1 and TRACKING GAIN UP mode 1:
LPC ON (lights up “ALL” indication)
ALL SERVO ON mode 2 and TRACKING GAIN UP mode 2:
LPC OFF (Does not lights up “ALL” indication)
*) LPC: Laser power control
Note 2:
TRACKING GAIN UP mode 1, 2 is not used in servicing.
1. Entering the CD Test Mode
1. Press the
[OPERATE] button to turn the power ON.
2. Open the disc lid, and put a disc.
3. Close the disc lid.
4. Press the
3. Close the disc lid.
4. Press the
[OPERATE] button to standby state.
5. Press the button
[EDIT], [SOUND] and > (CD) simulta-
neously.
6. After display “CD” for a few seconds, enter the CD test mode
(STOP mode 1), and display as below.
1. Enter the CD test mode
(STOP mode 1)
Press the
x
(CD)
button.
2. STOP mode 2
3. FOCUS mode
4. ALL SERVO
ON mode 2
5. TRACKING
GAIN UP mode 1
6. TRACKING
GAIN UP mode 2
7. ALL SERVO
ON mode1
Press the
x
(CD)
button.
Press the
[ , CD]
button.
u
Press the
[ , CD]
button.
u
Press the
[ , CD]
button.
u
Press the
[ , CD]
button.
u
Press the
[ , CD]
button.
u
Press the
[ , CD]
button.
u
Press the
x
(CD)
button.
Press the
x
(CD)
button.
Press the
x
(CD)
button.
Press the
x
(CD)
button.
Display
2. STOP Mode 2
1. Press the x (CD) button to enter the STOP mode 2, and dis-
play as below.
Display
2. Press the > and . button to move the optical pick-up to
position of the track where signal is recorded.
3. FOCUS Mode (Traverse Confirmation)
1. Press the u button to enter the FOCUS mode and display as
below. (Focus servo ON. CLV-S, tacking and sled servo OFF)
Display
2. Connect an oscilloscope to TP (TEO) and TP (VC) on the CD
board.
Connection:
88
XX
XX
XXX
88
07
00
3A0
11
07
00
3A0
3. Confirm that the traverse level of waveform satisfy specified
value as follows.
Traverse Waveform
+
–
–
CD board
TP (TEO)
TP (VC)
TP (VC)
oscilloscope
(DC range)
Specified Value:
traverse level: 160 to 380 mVp-p
traverse level: 160 to 380 mVp-p
Connecting Location: CD board (See page 34)
A
traverse level:
160 to 380 mVp-p
160 to 380 mVp-p
B
VC
A = B
– 34 –
TP(RFO)
TP(TEO)
TP(VC)
CD BOARD (CONDUCTOR SIDE)
4. ALL SERVO ON Mode 1
(RF Level and Jitter Confirmation 1)
1. Press the u button four times to enter the ALL SERVO ON
mode 1 (start playback the disc) and display as below.
(All servo ON. LPC ON)
(All servo ON. LPC ON)
Display
2. Connect an oscilloscope to TP (RFO) and TP (VC) on the CD
board.
Connection:
21
07
00
3A0
ALL
3. Confirm that the RF level and jitter of waveform satisfy speci-
fied values as follows.
RF signal Waveform
+
–
–
CD board
TP (RFO)
TP (VC)
TP (VC)
oscilloscope
(DC range)
Specified Values:
RF level : 1.0 to 1.4 Vp-p
jitter
RF level : 1.0 to 1.4 Vp-p
jitter
: less than 9 nsec
Connecting Location: CD board
5. ALL SERVO ON Mode 2
(RF Level and Jitter Confirmation 2)
1. Press the u button to enter the LPC OFF mode and display
as below. (All servo ON. LPC OFF)
Display
2. Confirm that the RF level and jitter of waveform satisfy speci-
fied values as follows.
Specified Values:
RF level : 0.8 to 1.4 Vp-p
jitter
RF level : 0.8 to 1.4 Vp-p
jitter
: less than 9 nsec
If the RF level and jitter are out of specified values, measure
again after clean the object lens by an applicator with lens clean-
ing liquid.
again after clean the object lens by an applicator with lens clean-
ing liquid.
6. Releasing the CD Test Mode
1. Press the x (CD) button to stop rotate the disc.
2. Press the
2. Press the
[OPERATE] button to release the CD test mode and
turn to standby state.
Connecting Location:
21
07
00
3A0
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
RF level:
1.0 to 1.4 Vp-p
1.0 to 1.4 Vp-p
– 35 –
Pin No.
Pin Name
I/O
Pin Description
1
I
I
I-V converted RF signal I input from the optical pick-up block detector
2
J
I
I-V converted RF signal J input from the optical pick-up block detector
3
VC
O
Middle point voltage (+ 1.65 V) generation output terminal
4 – 9
A – F
I
Signal input from the optical pick-up detector
10
PD
I
Light amount monitor input from the optical pick-up block laser diode
11
APC
O
Laser amplifier output terminal to the automatic power control circuit
12
APCREF
I
Reference voltage input terminal for setting laser power
13
GND
—
Ground terminal
14
TEMPI
I
Connected to the temperature sensor
15
TEMPR
O
Output terminal for a temperature sensor reference voltage
16
SWDT
I
Writing serial data input from the CXD2654R (IC121)
17
SCLK
I
Serial data transfer clock signal input from the CXD2654R (IC121)
18
XLAT
I
Serial data latch pulse signal input from the CXD2654R (IC121)
19
XSTBY
I
Standby signal input terminal “L”: standby (fixed at “H” in this set)
20
F0CNT
I
Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input
from the CXD2654R (IC121)
21
VREF
O
Reference voltage output terminal Not used (open)
22
EQADJ
I
Center frequency setting terminal for the internal circuit (EQ)
23
3TADJ
I
Center frequency setting terminal for the internal circuit (BPF3T)
24
VCC
—
Power supply terminal (+3.3V)
25
WBLADJ
I
Center frequency setting terminal for the internal circuit (BPF22)
26
TE
O
Tracking error signal output to the CXD2654R (IC121)
27
CSLED
I
Connected to the external capacitor for low-pass filter of the sled error signal
28
SE
O
Sled error signal output to the CXD2654R (IC121)
29
ADFM
O
FM signal output of the ADIP
30
ADIN
I
Receives a ADIP FM signal in AC coupling
31
ADAGC
I
Connected to the external capacitor for ADIP AGC
32
ADFG
O
ADIP duplex signal (22.05 kHz ± 1 kHz) output to the CXD2654R (IC121)
33
AUX
O
Auxiliary signal (I
3
signal/temperature signal) output to the CXD2654R (IC121)
34
FE
O
Focus error signal output to the CXD2654R (IC121)
35
ABCD
O
Light amount signal (ABCD) output to the CXD2654R (IC121)
36
BOTM
O
Light amount signal (RF/ABCD) bottom hold output to the CXD264R (IC121)
37
PEAK
O
Light amount signal (RF/ABCD) peak hold output to the CXD2654R (IC121)
38
RF
O
Playback EFM RF signal output to the CXD2654R (IC121)
39
RFAGC
I
Connected to the external capacitor for RF auto gain control circuit
40
AGCI
I
Receives a RF signal in AC coupling
41
COMPO
O
User comparator output terminal Not used (open)
42
COMPP
I
User comparator input terminal Not used (fixed at “L”)
43
ADDC
I
Connected to the external capacitor for cutting the low band of the ADIP amplifier
44
OPO
O
User operational amplifier output terminal Not used (open)
45
OPN
I
User operational amplifier inversion input terminal Not used (fixed at “L”)
46
RFO
O
RF signal output terminal
47
MORFI
I
Receives a MO RF signal in AC coupling
48
MORFO
O
MO RF signal output terminal
6-1. IC PIN FUNCTION DESCRIPTIONS
• BC BOARD IC101 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)
SECTION 6
DIAGRAMS
– 36 –
Pin No.
Pin Name
I/O
Pin Description
1
MNT0 (FOK)
O
Focus OK signal output to the MD mechanism controller (IC601)
“H” is output when focus is on (“L”: NG)
2
MNT1 (SHOCK)
O
Track jump detection signal output to the MD mechanism controller (IC601)
3
MNT2 (XBUSY)
O
Busy monitor signal output to the MD mechanism controller (IC601)
4
MNT3 (SLOCK)
O
Spindle servo lock status monitor signal output to the MD mechanism controller (IC601)
5
SWDT
I
Writing serial data signal input from the MD mechanism controller (IC601)
6
SCLK
I (S)
Serial data transfer clock signal input from the MD mechanism controller (IC601)
7
XLAT
I (S)
Serial data latch pulse signal input from the MD mechanism controller (IC601)
8
SRDT
O (3)
Reading serial data signal output to the MD mechanism controller (IC601)
9
SENS
O (3)
Internal status (SENSE) output to the MD mechanism controller (IC601)
10
XRST
I (S)
Reset signal input from the MD mechanism controller (IC601) “L”: reset
11
SQSY
O
Subcode Q sync (SCOR) output to the MD mechanism controller (IC601)
“L” is output every 13.3 msec Almost all, “H” is output
12
DQSY
O
Digital In U-bit CD format subcode Q sync (SCOR) output to the MD mechanism controller
(IC601) “L” is output every 13.3 msec Almost all, “H” is output
13
RECP
I
Laser power selection signal input from the MD mechanism controller (IC601)
“L”: playback mode, “H”: recording mode
14
XINT
O
Interrupt status output to the MD mechanism controller (IC601)
15
TX
I
Recording data output enable signal input from the MD mechanism controller (IC601)
Writing data transmission timing input (Also serves as the magnetic head on/off output)
16
OSCI
I
System clock signal (512 Fs = 22.5792 MHz) input terminal
17
OSCO
O
System clock signal (512 Fs = 22.5792 MHz) output terminal Not used (open)
18
XTSL
I
Input terminal for the system clock frequency setting
“L”: 45.1584 MHz, “H”: 22.5792 MHz (fixed at “H” in this set)
19
DIN0
I
Digital audio signal input terminal when recording mode (for digital optical input) Not used
20
DIN1
I
Digital audio signal input terminal when recording mode (for digital optical input)
21
DOUT
O
Digital audio signal output terminal when playback mode (for digital optical output)
Not used
22
DATAI
I
Serial data input terminal Not used (fixed at “L”)
23
LRCKI
I
L/R sampling clock signal (44.1 kHz) input terminal Not used (fixed at “L”)
24
XBCKI
I
Bit clock signal (2.8224 MHz) input terminal Not used (fixed at “L”)
25
ADDT
I
Recording data input from the A/D, D/A converter (IC603)
26
DADT
O
Playback data output to the A/D, D/A converter (IC603)
27
LRCK
O
L/R sampling clock signal (44.1 kHz) output to the A/D, D/A converter (IC603)
28
XBCK
O
Bit clock signal (2.8224 MHz) output to the A/D, D/A converter (IC603)
29
FS256
O
Clock signal (11.2896 MHz) output terminal Not used (open)
30
DVDD
—
Power supply terminal (+3.3 V) (digital system)
31 – 34
A03 – A00
O
Address signal output to the D-RAM (IC124)
35
A10
O
Address signal output to the external D-RAM Not used (open)
36 – 40
A04 – A08
O
Address signal output to the D-RAM (IC124)
41
A11
O
Address signal output to the external D-RAM Not used (open)
42
DVSS
—
Ground terminal (digital system)
43
XOE
O
Output enable signal output to the D-RAM (IC124) “L” active
44
XCAS
O
Column address strobe signal output to the D-RAM (IC124) “L” active
45
A09
O
Address signal output to the D-RAM (IC124)
• BD BOARD IC121 CXD2654R
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO SIGNAL PROCESSOR, EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER)
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER)
Click on the first or last page to see other ZS-M35 service manuals if exist.