Cd Section - Sony ZS-M35 Service Manual

5-3. CD SECTION

Set the CD test mode when performing confirmations.
After completing the confirmation, release the CD test mode.
In the CD test mode, the set works as following sequence.
CD test mode sequence:
1. Enter the CD test mode
(STOP mode 1)
Press the x (CD)
button.
2. STOP mode 2
[ , CD]
Press the
u
button.
3. FOCUS mode
[ , CD]
Press the u
button.
4. ALL SERVO
ON mode 2
[ , CD]
Press the
u
button.
5. TRACKING
GAIN UP mode 1
[ , CD]
Press the
u
button.
6. TRACKING
GAIN UP mode 2
[ , CD]
Press the
u
button.
7. ALL SERVO
ON mode1
[ , CD]
Press the u
button.
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 [POWER] button to turn the power ON.
2. Open the disc lid, and put a disc.
3. Close the disc lid.
4. Press the [POWER] 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.
Press the x (CD)
button.
Press the x (CD)
button.
Press the x (CD)
button.
Press the x (CD)
button.
Press the x (CD)
button.
– 31 –
88 XX
2. STOP Mode 2
1. Press the x (CD) button to enter the STOP mode 2, and dis-
play as below.
88 07
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)
11 07
2. Connect an oscilloscope to TP (TEO) and TP (VC) on the CD
board.
Connection:
CD board
TP (TEO)
TP (VC)
3. Confirm that the traverse level of waveform satisfy specified
value as follows.
Traverse Waveform
VC
Specified Value:
traverse level: 160 to 380 mVp-p
Connecting Location: CD board (See page 32)
Display
XX XXX
Display
00 3A0
Display
00 3A0
oscilloscope
(DC range)
+
–
A
traverse level:
160 to 380 mVp-p
B
A = B