Fostex CR200 Service Manual page 13

Adjustment 2
No.
1 CD-R VCO control voltage adjustment
2 Multi pulse time adjustment
3 EFM rising edge time adjustment
4 3T rising edge time adjustment
5 WBL + offset adjustment
6 Coarse WBL offset adjustment
7 RF offset adjustment
8 Playback power readjustment
9 Coarse focus offset adjustment
10 Main and sub mix ratio adjustment
11 Tracking amp. gain adjustment
SERVO UCOM BOARD ASSY
Shorten the two lands
to put the CR200 into
the TEST MODE.
Item
CN331 Pin-1 (VCOIN)
CN3506 Pin-6 (MPLS)
CN3506 Pin-5 (EFMIN)
CN3506 Pin-4 (SEFM)
CN3506 Pin-3 (3TIN)
CN3506 Pin-2 (3TOUT)
CN104 Pin-6 (RWBL)
CN104 Pin-5 (WBL)
CN204 Pin-1 (RF)
CN104 Pin-7 (PWAJT)
CN204 Pin-1 (RF)
CN104 Pin-1 (STE)
CN104 Pin-2 (MSTE)
CN104 Pin-3 (TE)
CN5021
1. ACT ERR
2. ACT IN
1 3
3. V+5A
CN5021
VR202
TE. GAIN
VR201
FCS. GAIN
1 2 3 1 2 3
1 2 3 1 2 3
1 2 3 1 2 3
1 2 3 1 2 3
1 2 3 1 2 3
6 1
CN204
ADJUST TP
Fig. 6
Test Point
VR301 (VCO CON)
VR3501 (MPLS DLY)
VR3502 (EFM DLY)
VR3503 (3T DLY)
VR107 (WBL+. OFS)
VR108 (WBL. OFS)
VR121 (RF. OFS)
VR103 (PB. PW)
VR105 (FE. OFS)
VR110 (MS. MIX)
VR111 (TE. GAIN)
STRATEGY BOARD ASSY
1 2
CN331
TP30
VR301
VCO CON
CN204
1. RF
2. TRKER
3. TRKIN
4. A GND
5. FCSIN
6. FCSER
CR200
Pot
CN3506
1. DGND
2. 3T OUT
1 6
3. 3T IN
4. SEFM
CN3506
5. EFM IN
6. MPLS
CN331
1. VCOIN
2. GND
VR3503
3T. DLY
VR3502
EFM DLY
VR3501
MPLS DLY
Fig. 7
13